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

A gene encodes a protein of 350 amino acids. a mutation creates an allele that only has the first 120 amino acids. what could ha

lianna [129]

The protein encoded by the mutant allele is shorter than the one encoded by the normal allele, the protein encoded by the mutant allele could be non-functional and the mutant allele could be associated with disease. In addition, DNA and mutation can happen possibly wherever on these molecules at any time. The most severe variations take place in the useful units of DNA is the genes in which the mutated form of a gene is named a mutant allele.

8 0

3 years ago

Select the description of sensory receptors.

charle [14.2K]

3....................

7 0

2 years ago

Which scenario would cause a covalent bond to form?

nekit [7.7K]

Answer: A) Two atoms share electrons so they can fill their outer shells

Explanation: A covalent bond is a type of bond formed by sharing equal number of electrons between two non-metal atoms so that both of them can attain a stable octet or duplet structure of noble gases.

In covalent bonding, there is no loss or gain of electrons between atoms. For example, the formation of chlorine molecule, chlorine atom has seven electrons in its outermost shell, remaining one electron to attain an octet structure of noble gases. Two chlorine atoms share one pair of electron, each chlorine atom donating one electron to form a pair so that each atom in the chlorine molecule attains an octet structure..

4 0

2 years ago

Which heat-induced condition is treated by removing clothing and getting the patient into a tub of cool water?

vovikov84 [41]

<span>Heat strokeHeat stroke is a condition caused by failure of the body's temperature-regulating mechanism when exposed to high temperatures. Heat stroke is treated by keeping the body temperature less than 102.5°F. Various cooling methods includes removing clothing, placing the patient in front of a large fan, and immersing the patient into a tub of cool water.
</span>

8 0

3 years ago

What two conditions must be present for osmosis to occur?

slamgirl [31]

A concentration gradient and membrane that allows water to pass, but not the solute, must be present

6 0

2 years ago