NEET BIOLOGY

REPRODUCTION

REPRODUCTION IN ORGANISMS

 Question [CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
A make believe organism has 10 chromosomes for each of its body cells. Cells are continuously being rubbed off and replaced. How many chromosomes will be contained in each new skin cell that is replaced?
 A 10 B 20 C 30 D 40
Explanation:

Detailed explanation-1: -So, the haploid chromosome number will be= 10/2= 5. The number of possible chromosome pairs is given by= 2n, where n is the haploid chromosome number. So, the number of chromosome pairs for having a diploid chromosome number of 10 will be= 25. So, the correct answer is ā25ā.

Detailed explanation-2: -Answer and Explanation: A cell with 10 chromosomes undergoes mitosis. The number of chromosomes that each of the new cells will have is c. 10 chromosomes each.

Detailed explanation-3: -D. Mitosis results in two identical daughter cells. If the mother cell started with 10 chromosomes each of the daughter cells resulting from mitosis will each have 10 chromosomes.

Detailed explanation-4: -Correct answer is option b) 20. Explanation: If the egg cell has 10 chromosomes (haploid ānā), then the number of chromosomes present in diploid cell (2n) is 20.

There is 1 question to complete.