What is the Mitosis cell cycle, give a description for each stage.

1 answer:

3 0

The four main phases of mitosis are:

Prophase- In the first half:The chromosomes start to shrink. The cytoskeleton begins to form the mitotic spindle, which will grow between the centrosomes and organize the chromosomes.The nucleolus goes away.
In the second half: The chromosomes become extremely compact. The nuclear envelope disappears and all the DNA comes out. Some of the mitotic spindle starts to catch chromosomes.

Metaphase- The mitotic spindle moves all of the chromosomes across the middle of the cell.

Anaphase- The two chromatids of each chromosome are pulled apart from each other and become their own chromosomes. Loose microtubules push the ends of the cell to make it longer.

Telophase- The mitotic spindle is broken back down into microtubules. Two new nuclei appear (one for each new cell). The chromosomes return to their normal form (not all squished down).

Another big step is cytokinesis, which starts either during Anaphase, or Telophase. In animal cells, the cell is pinched around the middle to create the two new cells. In plant cells, a cell plate comes into the middle of the cell and separates it into the two new cells.

The main four steps can be remembered using the acronym PMAT.

You might be interested in

Like all cells, the neurons' internal organization dictates its function. Neurons have relatively many mitochondria, an extensiv

BigorU [14]

Answer:

B is the answer

Explanation:

4 0

3 years ago

Which of the following accurately describes the binomial nomenclature naming system?

defon

Yes it's A definitely correct

7 0

3 years ago

Read 2 more answers

Waters in the coastal ocean tend to be more productive than waters of similar depth in the open ocean. What is the main reason f

Jet001 [13]

Answer:

The coastal ocean seems to be more productive than the waters of the similar height in the open ocean due to ample availability of water, sunlight, and nutrients. The coastal ocean has more nutrients due to the process of upwelling, that is, movement of water offshore by the currents.

Also, water situated on the continental shelves is comparatively shallower and thus it is turbulent. This mixing or turbulence keeps settling the nutrients stirred up and accessible, and eventually, ample of nutrients erode off the continents themselves and so water nearby to the shore seems to be greater in nutrients.

On the other hand, in the surface water away from the coastlines, usually, there is a lot of sunlight but no availability of adequate nutrients. Therefore, the majority of the ocean surface is not much productive.

Explanation:

4 0

3 years ago

What did Mendel call the first two individuals that mate in a genetic cross?

Monica [59]

Answer:

P generation

Explanation:

The first two individuals that mate in a genetic cross is called the Parental generation or P generation. This is one of the terms used by Gregor Mendel, the father of modern genetics. P generation refers to the passing of genes or traits of the first set of parents crossed to the offspring. Their offspring are called the first filial generation or F1 Generation.

5 0

3 years ago

(ASAP PLEASE) Dichotomous key of brewer’s yeast (saccharomyces cerevisiae) e. coli bacteria (escherichia coli) green hydra (hydr

Serjik [45]

Answer:

Does the organism have legs?

Does the organism reproduce asexually?

Can the organism ferment?

Is the organism infectious?

Explanation:

The questions HAVE to be yes or no, in order for it to effectively determine which species is which.

4 0

3 years ago