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KatRina [158]
3 years ago
13

genetics and the environment both play roles in cell differentiation. which is the best example of an environmental factor influ

encing cell differentiation
Biology
1 answer:
In-s [12.5K]3 years ago
7 0

Answer: etiolation of plant growth in shade, with fast growing cell without chloroplasts. Out of shade, cell differentiate again to produce photosynthesising cells

Explanation: It is a subjective decision as to what is ‘best’. Good examples are plant responses to changes in the nutrient supply.

when soil nitrogen is depleted some plants, such as legumes, grow nodules on their roots, with cells that release chemical signals to attract nitogen fixing bacteria.

Lack of light induces etiolation in many plants. New cells elongate and develop without chloroplasts, with rapid cell division exhibiting gravitropism, extending upward. When they grow beyond the shade area, cell differentiation changes again, to produce photosynthesising cells.

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Which of the following is the most predictable outcome of increased gene flow between two populations?
Rudik [331]

Answer:

The correct answer is b. decreased genetic difference between the two populations

Explanation:

The gene flow between two population always reduce the genetic difference between the two population because it increases the homogeneity between the population.  

If there is greater gene flow between the two populations genes will be shared and transferred between the individual of two population which will make the two gene pool to become more and more similar.  

This will increase the fitness of both the population because more allele will add to the two populations. Therefore the correct answer is b.

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In which situation is the principle of cross-cutting relationships useful in determining relative age?
r-ruslan [8.4K]

Answer:

your not aloud to do tests on here or at least don't say that for next time.

Explanation:

4 0
2 years ago
Read 2 more answers
Which of the following incorrectly matches the term with its location
Vlad [161]
Which of the following incorrectly matches the term with its location?

A. DNA is found in a chromosome.
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C. Genes are located in a nucleotide.
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ANSWER
C. Genes are located in a nucleotide.
6 0
3 years ago
The drug colchicine inhibits the formation of spindle fibers during mitosis. If you treat dividing plant cells with colchicine,
vekshin1

Answer:

D

Explanation:

During metaphase of cell division, the chromosomes line up in the metaphase plate and the spindle fibers from the poles extend and attach to the centromeres of the chromosomes. The spindle then contracts and pull different chromosomes to the opposite poles of the cell before the parent cell divides.   If spindle fibers do not form, then the chromosomes will not separate during anaphase.

Therefore, the final cell after mitosis will be a cell with double the number of chromosomes -because if you remember, during interphase, genetic material is replicated so each daughter cell can have its copy-. Due to quality control in the process of cell divisison, this cell will mostly undergo apoptosis, otherwise, it could develop into cancer.

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As long as you are referring to the green plants aka producers of the food chain/web.
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