NEET BIOLOGY

CELL STRUCTURES AND FUNCTION

CELL CYCLE

Question [CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
Does the number of chromosomes in mitosis change?
A
Yes
B
no
C
none of these its asexual
D
None of the above
Explanation: 

Detailed explanation-1: -Mitosis creates two identical daughter cells that each contain the same number of chromosomes as their parent cell. In contrast, meiosis gives rise to four unique daughter cells, each of which has half the number of chromosomes as the parent cell.

Detailed explanation-2: -During mitosis, chromosomes reorganise into compact cylindrical bodies so that the spindle can distribute one copy of the genome to each daughter cell. Condensins are key organisers of mitotic chromosome topology, with accumulating evidence that they achieve this through the extrusion of DNA into loops.

Detailed explanation-3: -Meiosis is a type of cell division that reduces the number of chromosomes in the parent cell by half and produces four gamete cells.

Detailed explanation-4: -Explanation: During the S-phase of interphase, the DNA is replicated, forming two identical sets of DNA. At the beginning of mitosis, the DNA condenses and coils into structures called chromosomes. Each chromosome exists as a pair of identical sister chromatids connected by a centromere.

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