AP BIOLOGY

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CELL DIVISION

MEIOSIS AND GENETIC VARIATION

Question [CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
An animal with a diploid number of 36 chromosomes will have ____ chromosomes in itsgametes and ____ chromosomes in its somatic/body cells.
A
18 ____ 18
B
18 ____ 36
C
36 ____ 18
D
36 ____ 36
Explanation: 

Detailed explanation-1: -1)d. 18, 36 Here diploid number of chromosomes equal to 36. somatic cells are diploid so their number of chromosomes will be 36.

Detailed explanation-2: -In an organism that has 36 chromosomes, at the end of meiosis I, each gamete contains 18 chromosomes, or 36 chromatids.

Detailed explanation-3: -The correct answer is C. The replicated chromosomes are still joined to their sister chromatids though; therefore, there are 36 chromatids.

Detailed explanation-4: -Meiosis results in reduction of chromosome number to one half in the normal diploid cell. Thus, if a cell has 36 chromosome before meiosis. After meiosis the four daughter cells produced will be having 18 chromosomes each.

Detailed explanation-5: -Expert-Verified Answer. 2) 9 bivalents can be observed if there are 36 chromosomes in a diploid cell. Bivalents can be calculated by dividing the number of chromosomes by four.

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