In animal meiosis, the diploid number of chromosomes is reduced to the haploid n
ID: 96808 • Letter: I
Question
In animal meiosis, the diploid number of chromosomes is reduced to the haploid number in which final cellular product(s): a) only the ova b) only in the secondary polar bodies c) in both the sperm and ova cells d) only in the production of spermatozoa What is the purpose of meiosis? a) To ensure the constancy of chromosome number from sperm to eggs. b) to ensure the constancy of chromosome number from one generation to another and permit genetic variations. c) to allow sex d) to make life more funExplanation / Answer
1) C is correct that is in both sperm and ova cells are haploid cells.
A) is wrong because among the other options only ova is not haploid.
B) is wrong because along with polar bodies ova also is haploid.
D) is wrong because not only in protection of sperm but also in also production of ova meiosis occurs.
2)-B is correct that is constancy of chromosome from one generation to another and permit genetic variations.
A is wrong because constancy of chromosome in eggs and sperm in not the purpose of meiosis. In meiosis recombination and crossing over occurs that produces genetic variations and changes in individuals.
Option C and D are irrelevant because to allow sex meiosis is not necessary.
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