All categories

3 years ago

Compare chromosome behaviors during mitosis and meiosis.

Biology

1 answer:

uysha [10]3 years ago

6 0

Answer:

Explanation:

he cell division of eukaryotes consists of 2 types of division - mitosis, and meiosis. Both the cell divisions have karyokinesis which follows the cytokinesis. It takes some hours and an indirect type of cell division. The mitotic chromosomes and meiotic chromosomes show different behaviors -

In mitosis, the cell divides one time while in meiosis the cell divides 2 times. DNA replication occurs during interphase in mitosis. In meiosis DNA replication happens in the first cell division and no DNA replication in the second cell division.

There is no synapsis in the mitotic chromosome. In meiosis, synapsis occurs in homologous chromosomes. It has seen in the prophase I of meiosis.

The 2 chromatids of the chromosome do not exchange their segments in mitosis. In meiosis the chromatids of 2 homologous chromosome exchange segments. This results in the crossing over between the 2 homologous chromosomes.

The mitotic chromosome, each chromosome joined by a centromere. The meiotic chromosome forms tetrads from bivalent. The bivalent consists of 2 centromeres where the tetrads are attached.

In mitosis, the chromosomes separate slowly during anaphase. but in meiosis short chromosomes separate early, and long chromosomes take some time to separate.

You might be interested in

What type of bond exists between two water molecules?

Alisiya [41]

Answer:

hydrogen bonds

Explanation:

i looked it up for u

6 0

3 years ago

Read 2 more answers

A somatic cell containing a diploid chromosome number of 24 undergoes mitosis. each daughter cell will have _____ chromosomes. 4

ANEK [815]

Each daughter cell will have

12 chromosomes

3 0

3 years ago

Approximately how much of the Sun's energy is currently reflected by Earth's atn

Crank

Answer:

40% my friend said that

Explanation:

3 0

2 years ago

HURRY PLZ WILL MARK BRAINLIEST

Bumek [7]

Answer:

The answer is 'D'- Their arm bones have the same structure, but not function. These are homologous structures.

Explanation:

Homologous structures are those which share a basic common structure but perform different function. The hand of a human performs functions like writing, cutting, washing, chopping etc. The wings of a bat are used for the purpose of flying.

Also, a dolphin's flippers, a bird's wing, a cat's leg are all homologous structures. The structures which are homologous have the following features:

They share a common origin
Their anatomy is similar
They have a similar pattern of development.

4 0

3 years ago

Read 2 more answers

In the context of brain-tissue implants, what is unique about stem cells? they survive for extended periods outside of the body.

yan [13]

The correct answer is "they can develop into most types of human cells".

Stem cells are cells that are undifferentiated to what function they may serve, depending on the tissue where it will develop in to. In the context of brain tissue implants, these stem cells can develop into brain cells or nerve cells or neurons which comprises the functional brain tissue; this is clinically significant as neurons are not capable of replacing themselves if damaged.

3 0

3 years ago