NEET BIOLOGY

REPRODUCTION

REPRODUCTION IN ORGANISMS

Question [CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
The sperm cells of a frog have 20 chromosomes. How many chromosomes are found in a body cell of the same animal?
A
10 chromosomes
B
20 chromosomes
C
40 chromosomes
D
80 chromosomes
Explanation: 

Detailed explanation-1: -Step 3: Therefore, there would be 40 chromosomes in the sperm cells of the same species.

Detailed explanation-2: -A frog gamete has 13 chromosomes. Every frog body cell, then, has 26 chromosomes.

Detailed explanation-3: -If a diploid cell from the hypothetical organism has 20 chromosomes, the haploid gamete would have 10. Diploid cells are those which have two sets of each chromosome, one set from each parent.

Detailed explanation-4: -If an organism has 20 chromosomes, then the number of chromosomes the daughter cells have after mitosis is 20 because when a cell divides by the process of mitosis it produces two clone daughter cells having the same number of chromosomes (20) as the parent cell has.

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