You are involved in an experiment involving fluorescent painting of chromosomes. You observe the following in a nucleus experiencing homologous pairing in metaphase I of meiosis. At appears that four chromosomes have become paired, with each chromosome pairing with two others (centromeres appear as white circles, and the four chromosomes appear in different colors). What is the best explanation of this finding

Answers

Answer 1

Answer:

It seems that a reciprocal translocation is going on.

Explanation:

A translocation occurs when a chromosomal fragment changes its location in the same chromosome from the original to a new one. Or when it leaves the chromosome to re-locate in a new different chromosome.

According to this, there are different types of translocations:

Intrachromosomal translocations: Intra-radial: the change in position occurs in the same arm of the chromosome. For instance, 123.456789 → 123.478569Extra-radial: The change in position occurs from one arm to the other of the same chromosome. For instance, 123.456789 → 15623.4789Extrachromosomal translocations:Transposition: not reciprocal interchange. The fragment leaves a chromosome to re-locate in another chromosome. The other chromosome does not send any fragment to the first one. Reciprocal translocation: There is a reciprocal interchange. A fragment of chromosome A goes to B, and a fragment of chromosome B goes to A.

Reciprocal translocations might be:

Fraternal: the interchange occurs among homologous chromosomesExternal: the interchange occurs among non-homologous chromosomes

Reciprocal translocations are easily recognized during meiosis because an association between four chromosomes can be observed.  This association is a quadrivalent structure.

During metaphase 1, the centromeres involved in the quadrivalent originate centromeric co-orientation or disjunction.


Related Questions

What is ment by adaptation?​

Answers

the action or process of adapting or being adapted.

the process of change by which an organism or species becomes better suited to its environment.

Answer:

Adaptation means a physical feature or behaviour that suits plants and animals to their environment.

According to scientists, donkeys and horses share a common ancestor. Which evidence shows that the two organisms are related?
Group of answer choices

Both run fast.

They have the same diet.

They have the same bones in their limbs.

Both are tall.

Answers

They have the same bone in their limbs

What do you call an animal cell after being filled by oamosis?​

Answers

Answer:

An animal cell after being filled by osmosis is called a solution, and because of that the animal cell will burst up by being filled with water and lyse :3

Explanation:

:3

define prokaryotic cell

Answers

A prokaryote is a cellular organism that lacks an envelope-enclosed nucleus.

1. A customer from a previous season comes into your store confused. A
bed of pink four o'clock flowers she planted the previous season self-
seeded and produced a mixture of about 1/4 red, 1/4 white, and 1/2 pink
flowers this year. The customer wants to know why the pink flowers are
now a mix of colors. This is possible because of ...
*

Answers

Answer:

The genes in flowers vary and change every season a little bit if they are not the perfect "pink" or "red" seed gene they will vary.

Hope this helps :)

8. X= 36 x 12 of 18
9. X = (25 x 3) = 15
10. X = 12 x 14 of 16​

Answers

Explanation:

8: X. =. 36x12x18=7776

9:. X. =. 25x3=15

X. =. 75=15

X. =. 5

10:. X. =. 12x14x16=2688

Imagine you’re a doctor treating a patient with severe vision issues. What questions might you ask to determine whether these issues are more likely to be inherited or caused by environmental factors?

Answers

Answer:

Ask if any of his/her siblings have vision issues

Ask if any of his/her parents or grandparents have vision issues

Ask if any of his/her children have vision issues

The question is above (: I’ll mark brainalist

Answers

answer: autotrophic

explanation:

plantlike protists produce their own food through photosynthesis and are thus autotrophic

A marine biologist measured the amount of heat radiated from an aquarium over the course of an experiment. His measurements are shown in the graph below.


Graph shows heat, measured in Joules, radiated from an aquarium over time, measured in seconds. At 0 seconds, the energy, in the form of heat, is 1.2 Joules. At 5 seconds, the energy is 1.6 Joules. At 10 seconds, the energy is 1.3 Joules. Finally at 15 seconds, the energy is 1.5 Joules.


Based on this data, he concludes that the aquarium cannot be considered a closed system for this experiment. Explain why this conclusion is invalid.


A closed system exchanges both matter and energy with its surroundings, and the scientist only measured the exchange of heat.

A closed system can exchange energy but not matter with its surroundings, and the scientist did not measure the movement of matter.

A closed system exchanges all of its energy with its surroundings, and the scientist only measured the exchange of heat.

A closed system exchanges all of its matter with its surroundings, and the scientist did not measure the movement of matter.

Answers

Answer:

The correct answer is - A closed system exchanges all of its energy with its surroundings, and the scientist only measured the exchange of heat.

Explanation:

The amount of heat radiated is measured and analyzed by the marine biologist in this given experiment from an aquarium and on the basis of data the diagram is represented that states that the radiated energy is not constant over time and there are fluctuations.

It can not be considered as a closed system as energy is still exchange with the surrounding system, however, mass is not exchange but still, it cannot be called a closed system.

name the type of body symmetry​

Answers

Answer:

If you want to know the types, here they are: radial symmetry, bilateral symmetry, and asymmetry.

Explanation:

The heron has long legs so that it can walk in the shallow water and catch fish.what is this type of adaptation called?​

Answers

Answer:

Aquatic Adaptation

true or false: The endocrine system is made up of organs called neurons that release chemical signals directly into the bloodstream.

Answers

It is false!
I’m 100% sure it’s false

In the crime region, the investigators search for pieces of evidence that reveal the truth and find the criminal. They look for fallen hairs, eyelashes,
saliva or drops of blood. Justify why any biological liquid or structure of the body will indicate the criminal.
a
All the body cells of the same individual have the same blood group.
b.
All the body cells of the same individual have same receptors on their surface.
Ο Ο Ο Ο
C.
All the body cells are controlled by checkpoints.
d.
All the body cells arise from mitotic divisions of the same fertilized egg.

Answers

Answer: d.  All the body cells arise from mitotic divisions of the same fertilized egg.

Explanation:

After conception occurs and an egg is fertilized, mitosis takes place as the egg begins to divide into other cells. This is how all the cells in the body are eventually formed regardless of how specialized their roles are.

As a result, every cell in the human body shares the same genes so any biological liquid or structure of the body would indicate the criminal because they would share the same gene as the rest of the cells in the criminal.

Characteristics of codon

Answers

Yo buddy bro I got a hold for wanna I don’t know how much
Most codons specify an amino acid.

The start codon AUG marks the beginning of a protein.

The stop codon marks the end of a protein.

Gourmet Eatery has a policy of automatically adding an 18%
tip to every restaurant bill,
28866

Answers

5195.88

that's the answer because that is what you get when you find 18% of 28866

5. Which of these would be the best thing for scientists to examine if they wanted to see if two organisms had a common ancestor?* O They would look at the larval forms of the organisms They would look at what the organisms liked to eat They would look at how the organisms reproduce. O They would look at how the organisms migrated to new locations​

Answers

pretty sure it's "They would look at the larval forms of the organisms".

Describe how the bacterium E. coli is used in the production of insulin
for the treatment of diabetes.
(5​

Answers

Answer:

bacteria go through fermentation process and produce proinsulin then connecting sequence between A and B chain spliced an enzyme and the resulting insulin is purified

If sports drinks have a higher solute concentration than blood, what condition may result when you drink them?

Answers

It’ll remain sugar in the blood.

easy 5th grade science please look at photo and answer!! giving brainliest

Answers

Answer:

What happens after water particles returns to the ocean is that it'll evaporate over the island, and precipitation happens :3

Explanation:

:3

The Six Kingdoms: Plants, Animals, Protists, Fungi, Archaebacteria, Eubacteria. How are organisms placed into their kingdoms?

Answers

Answer:

Organisms are placed into their Kingdoms based on their type of cells, their ability to make food, and the number of cells in their bodies.

Explanation: Hope this helps :)

The kingdom is the taxonomical classification. The six kingdoms are divided and differentiated based on the cell type, cell shape, structure, and similarities.

What is the kingdom?

The kingdom is the first level of the taxonomical classification that contains a large number of species and further classifies the organisms based on their similarities and differences. It includes plants, animals, protists, fungi, archaebacteria, and eubacteria.

The species are classified based on the cell structure and their shape that makes them different from each other like the prokaryotes and the eukaryotes. Further, they are classified based on the cell number like single or multi-celled structures.

Then they are differentiated further based on the other characteristics like the cell organelles, cell function, and activities, mode of nutrition, reproduction, and the organization of the body.

Therefore, the kingdom classifies the organisms based on similarities and differences.

Learn more about kingdom here:

https://brainly.com/question/5186929

#SPJ2

Importance and applications of biosystematics in biology?

Answers

In biology, the study of biosystematics helps scientists understand the evolution of organisms. Without it, they wouldn’t have been able to logically theorize where life came from. In modern biology, biosystematics is used to group, classify, and label organisms based on their genetic makeup and environmental habits.

Tabitha built a computer model of a weather system. She included information about bodies of water, the Sun, and the atmosphere.

After running the model the first time, Tabitha doubled the size of a freshwater lake in her model. This change caused more moderate temperatures and an increase in precipitation in the locations nearby.

Which two spheres are interacting when a body of water affects the weather of a location as it did in Tabitha's model?

a. atmosphere and geosphere
b. hydrosphere and atmosphere
c. geosphere and hydrosphere
d. hydrosphere and biosphere

Answers

Answer:

a

Explanation: because i guessed and got it write

Which of the following statements about migration is true?
a. Migration is always from one region to another.
b. Animals always migrate within a region.
c. Migration always negatively impacts an ecosystem.
d. Animals migrate for various reasons.
Please select the best answer from the choices provided
A
B

Answers

Answer:D

Explanation:

Answer:

D. Animals migrate for various reasons.

Explanation:

E2023

Mitosis and meiosis are cell division mechanisms that lead to different numbers of daughter cells. Which explanation best describes how these two processes maintain continuity?

Answers

meiosis :cell division that produces reproductive cells in sexually reproducing organisms

mitosis:cell division in which nucleus divides into nuclei containing the same number of chromosomes

meiosis nucleus divides twice and produces 4 daughter cells which are not genetically the same

mitosis necleus divides ones and produces two daughter cells which are genetically the same

One method for predicting the average temperature (in ºC) at which a short DNA molecule binds with its complement is to calculate a melting temperature (Tm) using the following formula. Tm = 4 (G + C) + 2 (A + T) Using the formula, CALCULATE the predicted Tm for the short single-stranded DNA molecule shown below? 5’-ATGCGCGACGCGATTTGAC-3’

Answers

Tm = 4 (11) + 2 (8) = 60 degrees Celsius

Provide at least three ways in which Mountains can be impacted by either natural processes or human processes, including both constructive and destructive processes.

HELP! I Will Pick brainliest

Answers

Answer:

Chemical & Mechanical Weathering

Erosion

Explosive Volcanic Eruptions

Explanation:

The opening and closing of the heart valves is caused by Multiple Choice action potentials within the cusps of the valves. pressure changes of alternating contraction and relaxation during the cardiac cycle. contraction and relaxation of papillary muscles that pull on heart strings. contraction of the smooth muscle in the walls of the great vessels leaving the heart.

Answers

Answer:

pressure changes of alternating contraction and relaxation during the cardiac cycle.

Explanation:

In Human anatomy, cardiac cycle can be defined as a complete heartbeat of the human heart which comprises of sequential alternating contraction and relaxation of the atria and ventricles, therefore causing blood to flow unidirectionally (one direction) throughout the human body.

Generally, the cardiac cycle occurs in two (2) stages;

I. Diastole : in this stage, the ventricles is relaxed and would be filled with blood.

II. Systole: at this stage, the muscles contracts and thus, allow blood to be pushed through the atria.

Hence, the opening and closing of the heart valves is caused by pressure changes of alternating contraction and relaxation during the cardiac cycle.

How long does the virtual plant survive when you give it a high amount of light and carbon dioxide but no water?​

Answers

Answer: Most plants are growing faster, but they have on average more starch, for plants to live, too much carbon dioxide can reduce the amount

Explanation:

pls help i dont get it​

Answers

The first one.

Hope this helps

Brainliest plz
A...
It's pretty much just like a wall.

Why are enzymes important for our bodies

Answers

Answer:

Because enzymes have many functions as chemical catalysts in numerous chemical reactions (for example in metabolism). By lowering the activation energy, they make it much easier to carry out reactions. They are also indispensable for signal transduction and cell regulation, often via kinases and phosphatases. They also generate movement, with myosin hydrolyzing ATP to generate muscle contraction, and also transport cargo around the cell as part of the cytoskeleton. Other ATPases in the cell membrane are ion pumps involved in active transport.

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