AP BIOLOGY

CELL DIVISION

MEIOSIS

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

. If an organism has an N number of 10 chromosomes (haploid # of 10), how many chromosomes are in a somatic cell (body cell) of this organism (what is the diploid #)?

A	20
B	40
C	5
D	100

Explanation:

Detailed explanation-1: -If the egg cell has 10 chromosomes (haploid ‘n’), then the number of chromosomes present in diploid cell (2n) is 20. The mitotic cell division is also known as equational division meaning that the number of chromosomes in each daughter cell is the same as the number of chromosomes present in the parent cell.

Detailed explanation-2: -The diploid chromosome number is 10. So, the haploid chromosome number will be= 10/2= 5.

Detailed explanation-3: -A diploid cell contains 10 chromosomes (2n = 10).

Detailed explanation-4: -In humans, gametes are haploid cells that contain 23 chromosomes, each of which a one of a chromosome pair that exists in diplod cells. The number of chromosomes in a single set is represented as n, which is also called the haploid number. In humans, n = 23.

There is 1 question to complete.