AP BIOLOGY

CELL DIVISION

MEIOSIS AND GENETIC VARIATION

Question [CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
Choose the right option for meiosisI. Four haploid cells are producedII. Produces gametes and genetic variation in organismsIII. Produces gametes and genetic variation in organisms
A
I
B
I AND II
C
I, II AND III
D
I AND III
Explanation: 

Detailed explanation-1: -At the conclusion of meiosis, there are four haploid daughter cells that go on to develop into either sperm or egg cells.

Detailed explanation-2: -These reproductive cells are produced through a type of cell division called meiosis. During meiosis, a diploid parent cell, which has two copies of each chromosome, undergoes one round of DNA replication followed by two separate cycles of nuclear division to produce four haploid cells.

Detailed explanation-3: -Meiosis ensures the production of haploid phase in the life cycle of sexually reproducing organisms whereas fertilisation restores the diploid phase. For example, meiosis occurs during gametogenesis in plants and animals which leads to the formation of haploid gametes.

Detailed explanation-4: -Reduction to Haploid This means that it is equally likely for a given chromosome to be distributed to either of the two daughter cells. By shuffling the genetic deck in this way, the gametes resulting from meiosis II have new combinations of maternal and paternal chromosomes, increasing genetic diversity.

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