AP BIOLOGY

ANIMAL REPRODUCTION AND DEVELOPMENT

ASEXUAL REPRODUCTION

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

A cell in the stem tip of a corn plant contains 20 chromosomes. How many chromosomes will each daughter cell have?

A	20
B	10
C	5
D	40

Explanation:

Detailed explanation-1: -Final answer: A cell has 20 chromosomes. The number of chromosomes in the daughter cells after meiosis is 10.

Detailed explanation-2: -Corn has 20 chromosomes, consisting of two sets with one set (10) from the pollen (tassel) and the other from the egg cell (ear). While the corn plant has 20 chromosomes, its gametes, i.e. pollen in the tassel or eggs in the ear contain only one half of the 20 chromosomes.

Detailed explanation-3: -If there are 20 centromeres in anaphase, there are 20 chromosomes within the dividing cell. As a result, each end pole of the dividing cell will receive 10 chromatids, with each chromatid becoming a chromosome for the cell.

Detailed explanation-4: -At the end of meiosis II, each cell (i.e., gamete) would have half the original number of chromosomes, that is, 15 chromosomes.

Detailed explanation-5: -Hence, answer is ‘10 chromosomes’.

There is 1 question to complete.