NEET BIOLOGY

REPRODUCTION

REPRODUCTION IN ORGANISMS

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Question [CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]

Sheep have 54 chromosomes in their diploid cells. How many chromosomes would a haploid sheep cell have?

A	54
B	51
C	27
D	35

Explanation:

Detailed explanation-1: -2. Divide 54 by the number of pairs of chromosomes in a sheep somatic cell, which is 2. 3. This results in a haploid number of 16.

Detailed explanation-2: -The haploid chromosome complement for the sheep consists of 23 acrocentrics, 3 metacentrics and one sex chromosome, a total of 27 chromosomes or 30 chromosome arms.

Detailed explanation-3: -The domestic sheep has 54 chromosomes, 52 autosomes and one pair of sex chromosomes. Three pairs of autosomes are submetacentric, the rest are acrocentric (telocentric?).

Detailed explanation-4: -If any organism has a haploid of 24 chromosomes, the total number of chromosomes in its diploid stage will be 48 chromosomes ( 24x2)

Detailed explanation-5: -The haploid number in humans is given as 2n=46, n = 23, this is because the haploid human cells possess one set of 23 chromosomes – 22 sets of autosomal chromosomes (non-sex chromosomes) and 1 set of sex chromosomes.

There is 1 question to complete.