Which of the following events does not occur during some stages of interphase?

Biology

1 answer:

noname [10]3 years ago

4 0

Answer:

The correct answer is separation of sister chromatids.

Explanation:

The metabolic phase of the cell cycle is called interphase. It comprises three stages, that is, G1, S, and G2. The main activity of interphase is to assist the cells in its growth and DNA replication, duplication of organelles, and thus, enhancing the cell's size.

In interphase, that is, post S phase, the chromosomes gets paired with each other and give rise to sister chromatids. They get combined with each other with the assistance of cohesin proteins. It is at the metaphase stage, that the cohesin protein gets dissociated apart and thus allows the sister chromatids to get separate from each other.

You might be interested in

In garden peas, one pair of alleles controls the height of the plant, and a second pair of alleles controls flower color. The al

Lerok [7]

Answer:

The parent's genotypes are:

Ddpp - tall, white parent

ddPp - dwarf, purple parent.

Explanation:

This question involves two different genes coding for height and flower color in pea plants. The alleles for tallness (D) and purple color (P) are dominant over the alleles for dwarfness (d) and white color (p) respectively.

According to this question, a tall plant with white flowers is crossed with a dwarf plant with purple flowers to produce the following proportion of offsprings: 1/4 tall purple, 1/4 tall white, 1/4 dwarf purple, and 1/4 dwarf white.

Since some of the offsprings contain recessive alleles for both or either genes, the dominant traits of the parent is controlled by an heterozygous genotype. This means that the tall plant with white flowers has a genotype: Ddpp while the dwarf plant with purple flowers has the genotype: ddPp. In a cross between Ddpp × ddPp, 1/4 of each combination of alleles is produced in the offsprings (see punnet square in the attachment).

3 0

3 years ago

Explain why the formation of abscission layer causes sugar to accumulate in leaves.

kramer

Abscission layer is the layer of cutinized parenchyma cells that develops in the abscission zone. The abscission zone form across the base of the plant part, where the break eventually occurs. During the photosyntesis chlorophyll using sunlight produces sugar and storches which are used as food by plant. And sugar accumulate in leaves.

3 0

3 years ago

Which of the following is an order of amphibian?

kaheart [24]

The answer is A. Anura

8 0

3 years ago

What is the difference between threatened, endangered, and extinct species?

mario62 [17]

Threatened means they are lowering in numbers and nearing to be endangered.

Endangered means they are dangerously close to being extinct

Extinct means there is none of them left in the wild.

I hope this is what you meant.

4 0

3 years ago

Read 2 more answers

Help my lovlies!<br> Why do plants in the tundra have shallow, wide roots? List the 2 reasons

MaRussiya [10]

I think its because so the plants can absorb more nutrients from the soil while being sturdy and wide so when the plant gets snowed on it doesn't break<span />

7 0

3 years ago

Read 2 more answers