Answers
The cell cycle can be explained as a sequence of events by which a cell duplicates its genome, synthesizes other cell constituents, and eventually divides into two daughter cells.
explanation
The two primary phases of the cell cycle are
1. The interphase It is the phase between two successive M phases. It follows cytokinesis. It is divided into G1, S, and G2 phases.The DNA replication occurs in the S phase of the interphase2. The M phaseThe M phase has four stages
ProphaseMetaphaseAnaphaseTelophaseCytokinesis follows the M phase.
The prophase is the first stage of the M phase. Here, the initiation of condensation of chromosome material takes place. As a result of this, the mitotic spindle is developed. The metaphase is characterized by the complete disintegration of the nuclear envelope. And, the chromosomes move to the spindle equator. In anaphase, two daughter chromatids are formed from the chromosomes. Telophase is characterized by the decondensation of the chromosome material and the formation of two new nuclei (Karyokinesis) and as a result, the mitotic spindle disappearsThe cytokinesis is the last step. Here, the cell gets divided into two daughter cells. In animal cells, it can be achieved by the appearance of a deep furrow in the plasma membrane. However, plant cells require a cell plate as they are enclosed by a cell wall.ConclusionSo, the final answers are,
Interphase - Replication of DNA and follows the cytokinesis.Prophase - Formation of the mitotic spindleTelophase - Mitotic spindle disappears as two new sets of chromosomes arrive at the opposite poles.Cytokinesis - The cell is split into two daughter cells and plants require the formation of a cell plate.Related Questions
Does every gene combination show up in the offspring?
Answers
Answer:
Answer!
Explanation:
Okay so, genes come in different varieties; which are called allele. somatic cells contain two alleles for every gene, with one allele provided by each parent of an organism. BUT, an allele that is hidden, or not expressed by an organism, can still be passed on to that organism's offspring and expressed in a later generation.
During meiosis I, chromosomal pairs randomly align along the metaphase plate. Each chromosome pair member carries one allele for each gene. Every gene combination shows up in the offspring.
Chance determines which of the 23 homologous pairs of both parents' chromosomes are inherited. The possible combinations of 23 chromosomal pairs total 8,324,608. As a result, the chromosomal combinations of two gametes are almost never identical.
Actually, each parent has two distinct gene pools. Additionally, only half of each parent's DNA is passed on to their offspring. and that the randomness of the portion that is passed down. All of these factors work together to guarantee that every child has a distinct collection of genes.
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HELP ASAP
How did the environment affect the populations of peppered moths in the 1800s in
London?
Because of the soot covering everything, the dirtier darker moths will be eaten
less often, allowing them to reproduce and pass their genes on to the next
generation.
Because of the soot covering everything, the lighter colored moths will be eaten
less often, allowing them to reproduce and pass their genes on to the next
generation.
The environment did not affect the peppered moths-- the populations are still
the same.
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Answer:
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Explanation:
Intercalated disc between cardiac muscle cells serve to transfer
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Answer:
Serve to transfer signals between cells.
Explanation:
Intercalated disc also called gap junctions are structural formations that are located between the myocardial cells of the heart. They help to bond or connect cardiac cells fibers together. They also help in cell to cell communications and propagate action potential. They serve to transfer signals between cells.
When blood passes through a capillary bed in the
it downloards O2 and uploads CO2.
Answers
Answer:
Exchange of gases takes place at alveoli sacs of lungs, which are equipped with capillary vessels or bed.
Explanation:
On inspiration or taking air through nostrils, surrounding air enters the lungs and it reaches air sacs or alveoli. Here, the outside air will have more amount of oxygen when compared with oxygen in blood at that site. Hemoglobin in the blood have high bonding capability to oxygen, so it captures oxygen and takes it to heart for pumping into other parts of the body. Likewise, the circulations continues from lungs to heart > hear to body parts > body parts to heart > heart to lungs for purification.
Today we will start an investigation to see how different kinds of seeds are affected by different levels of ____, _______, meaning different concentration of salt (sodium chloride, NaCl) dissolved in water
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Explanation:
salinity
from
http://sc6thgradescience.weebly.com/uploads/3/0/9/8/30980165/week_8_plant_booklet_new_standards.pdf&ved=2ahUKEwj0-7jr-LrwAhXPQs0KHVFnDNIQFjAAegQIAxAC&usg=AOvVaw26-9xULp2xjBb4NLgg8Arc
What would the genotype be for an orange kitty
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Answer:
DNA
Explanation:
All living organisms _______
A. Photosynthesize
B. Respire
C. Move
D. Feed
E. Transpire
Answers
Answer:
B. Respire
hope it helps ... 【◆◆】
Describe the structure of a fibrous joint and give an example of where this occurs in the body.
Answers
Explanation: For example, the joint between two bones of skull. The frontal bone and the temporal bone of the skull are fused with one another and there is no movement between the two bones. Where the bones are fused together a fissure is formed , it is like a line but little deep on the surface to show that there is a fusion . This type of joint is mostly present between the bones where there is no movement like in the skull , between the vertebrae , between the ribs and sternum.
If a person has one dominant and one recessive trait for a gene, the allele combination is …
Question 10 options:
a)
Purebred
b)
Hybrid
c)
Recessive
Answers
B) hybrid
Because the genotype is heterozygous
Which current has a warming effect on the climate of the southeast coast of Africa?
Answers
Answer:
Agulhas Current
Explanation:
The Agulhas Current transports warm water from the Indian Ocean southwards along the South African coast.
Answer:
Agulhas Current
Explanation:
Other persons explanation
A radioactive element has a half-life of 2,000 years. If a sample of this element begins with a mass of 100 grams, how long would you have to wait for the mass to decrease to 25 grams?
Answers
Therefore, a half-life of 2000 years saying that 100 grams will decompose to 50 grams in 2000 years. That 50 g will decompose to the requested 25 grams in another 2000 years. 2,000 + 2,000 = 4,000 years are required.
Describe element.Elements are substances that cannot further breakdown as a result of any chemical reaction. There are a certain number of protons in each element's atom.
Which elements are important?Since they make the organic compounds that are present in all living things, chemical elements are crucial to living things. Carbon is the primary element in all organic compounds, including lipids, nucleic acids, proteins, and carbohydrates.
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su cuerpo esta constituido por células a) aubacterias b) eucariotas c) ptocariotas d) Arqueobacteria
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Answer:
your body is made up of cells a) aubacteria b) eukaryotes c) ptokaryotes d) Archeobacteria
Explanation:
because the biggest cell in your body is the brain so it needs all the brain cells in your mind to make the brain makes sense
Which structure can be found in a eukaryotic cell but NOT in a prokaryotic cell?
A.
mitochondrion
B.
cytoplasm
C.
chromosome
D.
plasma membrane
Answers
Answer:
Plasma membrane
Explanation:
If a scientist wanted to follow Mendel’s experiment with a different kind of plant, which type of plant would she examine?
Answers
Answer: Pure line plant
Explanation:
Pure line plants are those plants that are used for breeding and selecting organisms with a desire trait to a number of generations until the wanted trait is established. Mendel had chosen pea plant for his experiments and that was a pure line species. It was bred to many generations so as to obtain the desired trait in successive generation. The plants were utilized to study the laws of inheritance. Also it was noticed that one trait being recessive in one generation will be expressive in other generation.
Which process is responsible for causing this column of rock to form?
A. crystallization
B. deposition
C. sedimentation
D. weathering
Answers
Answer:
i believe it would be a because of stalagtites and stalagmites but i'm not 00% sure
Explanation:
Why is the following sentence false?
Acetyl CoA is a versatile molecule that participates in various metabolic pathways such as fatty acid synthesis, glycolysis, Krebs cycle, beta-oxidation, urea cycle, synthesis of cholesterol and ketone bodies.
Answers
Answer:
Please dont delete
Explanation:
Hello. I am sorry that I can not answer your question but I am doing this so I can get answers of my own. I appreciate your understanding and I hope you get your answer soon. Good luck!
Number of matings of roan-coated cows and roan coated bulls resulted in the following
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When red cattle breed with red cattle, the resultant offspring show both red and white fur, resulting in a mixed coat pattern called "roan."
What is a roan bull?The roan pattern, normally in Shorthorn cattle, is inherited as a heterozygous genotype. Roaming is usually the intermixing of two dissimilar colored hairs - black and white make a blue roan while red and white make a red roan.
The roan coat color in livestock species is distinguished by a mixture of white and tint hair in cattle, If it is a breed that has the roan color pattern, like a Shorthorn, then yes it can be pure-blooded. Or it can be a cross-breed with the roan color pattern. Roan is a color, not a breed.
So we can conclude that Roan" mentions a horse coat color pattern characterized by a mixture of colors.
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observe the cartoon on the next page.Identify each simple machine represented in the machine.your choices will be:lever,inclined plane,pulley,wedge,screw,,wheel and axel,and pendulum.(not really a simple machine,but will be ok in this worksheet)
Answers
Answer:
Hii could u please show me the cartoon??
: )
Explanation:
Smooth
Smooth
O
Smooth
A.
Smooth
o
Smooth
X
X
Wrinkled
It is true only in the plant world.
Smooth
Smooth
Based on the information above, what would a geneticist say about the example of the
pea plants?
Smooth
Wrinkled
B.
It is based purely on chance.
C. It has no relationship to human transmission of traits.
D. It helps show transmission of traits from parents to offspring.
E. It is too dated to have application in today's world.
Answers
Mendel's tests on the pea plant are still relevant today since they demonstrate how traits are passed down through generations, hence option D is correct.
What are pea plant traits?The pea experiment is frequently used in classrooms because peas have distinguishable qualities and it is relatively straightforward to analyze how these traits are inherited.
When a person possesses a dominant characteristic and is heterozygous for that trait, the descendants of that person might also possess a recessive trait.
Therefore, It helps show the transmission of traits from parents to offspring.
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give any character of gene?
Answers
Answer:
A gene is composed of a sequence of nucleotides, which are the building blocks of DNA. Each gene contains the information needed to construct a specific protein, which performs a specific function in the body. Genes are passed from parent to offspring and contain the instructions that make each species unique.
Explanation:
What do you think would happen if you raised the temperature more? Why would it be a bad idea?
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Answer:
because eventually the population of fish will decrease because they are having a hard time breathing in such hot temperature.
Explanation:
(brainliest plz)*
Pleeeeeasssssee heeelp asap The image is attached
The box lists some characteristics of a plant that has adapted to conditions in Its environment. Grows in clusters and low to the ground Able to grow under a layer of snow Carries out photosynthesis at temperatures below freezing Flowers very quickly and briefly during Summer Produces small, moisture-retaining leaves To which type of environment is the plant best adapted? A. Desert Grassland Rainforest D. (ID Tundra
No links i will report
Answers
pls help me I am rlly confused
Answers
All of an organism's characteristics are inheritable which evolves over millions of years. An example of this is the modern day horse's foot.
What is Evolution?This is referred to as the change in the heritable characteristics of biological populations over successive generations.
All an organism's characteristics can be inherited and evolves over a period of time as a result of the changing environmental conditions which helps them to adjust thereby increasing their chances of survival hence preventing extinction of species.
For example, over millions of years of evolution, many horses lost their side toes and developed a single hoof as a result of them needing to move at faster speeds to evade predators.
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What percentage of the population can determine their blood type from
saliva, tears,sweat, or milk? (Numerical answers only) thanks
Answers
About 80% of the population can determine their blood type from saliva, tears, sweat or milk. These are known as secretors, and they refer to the fact that antigens present in the blood can also be found in bodily fluids like saliva.
What are antigens?Your immune system uses antigens as markers to determine whether or not something in your body is hazardous. Viruses, bacteria, cancers, and healthy bodily cells all include antigens. Antigen testing is carried out to identify viral infections, keep an eye on specific illnesses, screen for them, and ascertain a donor's compatibility with a transplant.
What are secretors?The term "secretor status" describes whether water-soluble ABO blood group antigens are present or absent in a person's body fluids, including saliva, tears, breast milk, urine, and semen. People are classified as secretors or non-secretors depending on whether they secrete certain antigens in their body fluids.
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a change in position in relation to a reference point is:
a. acceleration
b. displacement
C. speed
d. velocity
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Answer:
it would be b. displacement
Question attached with image
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One of the genetic diseases known as sickle cell disease is sickle cell anemia. Red blood cells, which deliver oxygen to every region of the body, are affected in terms of structure.
What is Sickle cell anemia?Red blood cells can flow through blood veins with ease. Red blood cells with sickle or crescent shapes are characteristic of sickle cell anemia.
Additionally, these sickle cells develop a hard and sticky coating that can hinder or delay blood flow.
Most persons with sickle cell anemia are incurable. Treatments can reduce suffering and aid in avoiding disease-related consequences.
Therefore, One of the genetic diseases known as sickle cell disease is sickle cell anemia. Red blood cells, which deliver oxygen to every region of the body, are affected in terms of structure.
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Compare the punnet squares you constructed in Activity 4, "Breeding Corn", with the punnet squares you constructed in this activity. By answering the following questions, show how the possible outcomes of a cross for one trait help analyze two traits.
A. How did you need to change the punnet square to consider two traits?
B. How would you need to change the punnet square if you were to consider three traits?
Answers
Punnett squares represent the possible genotypes of the offspring according to the parental's gamete combinations. The number of gametes depend on the number of alleles and traits considered. A) New rows and columns were added to the square because each parent contributed with four types of gametes (4 rows and 4 columns). B) The square would be constructed with eight rows and eight columns.
What is a Punnett square?
The Punnett square is a graphic representation that shows the different types of gamete combinations according to the alleles involved in a cross.
Punnett squares are composed of columns and rows in which all the different potential gametes are placed.
columns represent one of the parental gametes, and rows represent the other parental's gametes.The intersection between each column and row suggests a possible genotype among the offspring.
The number of columns and rows will depend on the number of genes involved in the cross. We can use the formula 2ⁿ to figure out how many gametes are possible (2 is the number of alleles, and n is the number of genes). Assuming diallelic genes,
If we consider only one gene, two types of gametes are possible (2¹). If we consider two genes, four types of gametes are possible (2²). If we consider three genes, eight types of gametes are possible (2³)
Punnett squares shows the probabilities of getting offspring with different genotypes and their consequent phenotypes.
In the exposed example, we need to compare a punnett square in which we consider only one gene with a punnett square in wich two genes are considered.
From activity 4: Punnett square
Cross: Purple with yellow
Parentals) PP x pp
Gametes) P P p p
Punnett square)
P P
p Pp Pp
p Pp Pp
F1) 100% purple kernels, Pp.
Cross: Heterozygous purple kernels from F1
Parentals) Pp x Pp
Gametes) P p P p
Punnett square)
P p
P PP Pp
p Pp pp
F2) 75% Purple (PP + Pp) and 1/4 yellow kernels (pp)
In these crosses, we only consider one diallelic gene that expresses complete dominance.
Punnett squares are composed of two columns and two rows in which both types of gametes are located.
Now, we need to consider two genes (P and S), which means four alleles are involved and four type of gametes are possible.
Cross: Between two dihybrid individuals
Parentals) PpSs x PpSs
Gametes) PS, Ps, pS, ps PS, Ps, pS, ps
Punnett square)
PS Ps pS ps
PS PPSS PPSs PpSS PpSs
Ps PPSs PPss PpSs Ppss
pS PpSS PpSs ppSS ppSs
ps PpSs Ppss ppSs ppss
F1)
9/16 individuals are expected to express both dominant traits (PPSS, PpSS, PPSs, PpSs)3/16 individuals are expected to express only one dominant trait (PPss, Ppss)3/16 individuals are expected to express the other dominant trait (ppSS, ppSs) 1/16 individuals are expected to express both recessive traits (ppss)Now, we need to compare Punnett squares from activity 4 (one trait) with this new Punnett square (two traits), and answer the questions,
A. How did you need to change the punnet square to consider two traits?
Since we consider two traits, we need to add rows and columns according to the possible gametes. The new punnett square must have four columns and four rows (2ⁿ = 2² = 4).
Remember that all the possible gametes depend on the number of possible allelic combinations.
B. How would you need to change the punnet square if you were to consider three traits?
If we consider three traits, we need to construct a Punnett square with eight columns and eight rows (2ⁿ = 2³ = 8).
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What are air masses, and how do they work? Don't copy and paste.
Answers
What are Air Masses: They large volumes of air that have generally the same temperature and pressure.
How they work: One is heated by an electrical current, the other is not. As air flows across the heated wire, it cools down.
Example of an Air Mass: The air masses in and around North America include the continental arctic, maritime polar, maritime tropical, continental tropical, and continental polar air masses. Air is not the same everywhere.
Fact: Unstable air masses have different temperatures and pressures.
How they are formed: An air mass forms whenever the atmosphere remains in contact with a large, relatively uniform land or sea surface for a time sufficiently long to acquire the temperature and moisture properties of that surface.
*** The Earth's major air masses originate in polar or subtropical latitudes.
Define Arteries.
Class 10 - NCERT Book - only references from this book, answers from the internet will be reported. No spam!!!
Answers
Answer:
[tex]{\boxed{\boxed{\tt { Arteries}}}} \ [/tex]
✏ Arteries are the vessels that carry blood away from the heart to various organs of the body.Since, the blood emerges from the heart under high pressure, the arteries have thick, elastic walls.
[tex] \huge \boxed{\mathbb{QUESTION} \downarrow}[/tex]
Define Arteries.Class 10 - NCERT Book.[tex] \huge \boxed{\mathfrak{Answer} \downarrow}[/tex]
According to the NCERT book (the Indian CBSE school textbooks) :-
Arteries are defined as the vessels that carry blood away from the heart to various organs of the body. The arteries have thick, elastic walls because the blood emerges from the heart under high pressure.ITS A TIME LIMIT PLZ HURRY
Answers
Answer:
Answer D. Scratching it with other materials
Explanation:
Let's start eliminating some answers
Answer A; If you hit an object with a hammer, you will just figure out if that object can be broken with a certain amount of force. In most cases, this will not be helpful.
Answer B; When putting a material in an acid, many things could happen. This things that happen are called chemical reactions. Not every material will have a chemical reaction so this step could be useless.
Answer C; Chipping a piece off of a material will not grant you much information. Yes if may be easier to experiment will a smaller piece but the action by it's self is not useful.
Answer D; Scratching a material will another material can be very helpful. If you have two materials, labeled A and B, you can find out the Mohs hardness scale. If A is damaged by B, the hardness of A is less than B and vise versa. This can be very helpful when identifying materials.
So answer D makes the most sense