Question

If a cell has 32 pairs of chromosomes in its diploid state, how many chromosomes will it have after Meiosis 1? A. 8 B. 64 C. 32 D. 16

Answer 1

Answer:

option c is correct that is 32

Explanation:

meiosis occur in two phases in the first phase DNA replication occur and amount of DNA becomes doubled without any changes in the chromosomes number and two daughter cells( each 2n) are formed

now in stage 2 each daughter cell undergoes mitosis with the formation of two cells  each with half chromosomes (n)

now 2n =32

n=32/2=16

after meiosis stage 1 ........ two daughter cell each with 32 chromosomes  

stage 2.... each daughter cell form two grand daughter cell each with 16 chromosomes

Answer 2

A cell with 32 pairs of chromosomes will have 32 chromosomes after meiosis I

WHAT IS MEIOSIS?

• Meiosis is a cell division that results in the formation of four daughter cells that have their chromosomal number reduced by half i.e. from diploid (2n) to haploid (n).

• Meiosis occurs in a two step division process namely: meiosis I and meiosis II. Meiosis I involves the separation of homologous chromosomes while meiosis II involves the separation of sister chromatids.

The actual reduction in chromosome number takes place in meiosis I. Hence, a cell with 32 pairs of chromosomes i.e. 64 chromosomes will have (64 ÷ 2) = 32 chromosomes after meiosis I.

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