3b. In the common fruit fly, meiosis is the same as in a human. Fruit flies have
ID: 187060 • Letter: 3
Question
3b. In the common fruit fly, meiosis is the same as in a human. Fruit flies have a total of 8 chromosomes in a normal somatic cell, instead of how many sister chromatid pairs are present? a) 0 46 in a human. In a fruit fly cell that is undergoing metaphase of meiosis II, b) 4 c) 8 d) 16 3c. In the common fruit fly, meiosis is the same as in a human. Fruit flies have a total of 8 chromosomes in a normal somatic cell, instead of 46 in a human. In a fruit fly cell after meiosis II and cytokinesis, how many chromosomes are present per cell? a) 0 b) 4 c) 8 d) 16Explanation / Answer
3b. Meiosis is process of replication in which number of chromosomes per cell cuts into half. In case of fruit flies with 8 chromosoms.Meiosis will take place between one parental cell with 4 chromosomes and 4 chromosomes from other parental cell. Single chromosome contains copy of self which is known as is sister chromatid.
As a result, In metaphase of Meosis 2 you will see 4 Pairs of sister chromatid
(2 pairs from one cell and 2 pairs from other cell of meiosis)
Hence correct answer is b) 4
3c) When you read cautiously, you will come to know that the question is how many chromosomes are present per cell after Meosis and cytokinesis. After is very important factor to think of. After Meiosis and cytokynasis you will get back normal number of chromosom which is 8 for fruit fly
Answer is c) 8
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