3) Fruit flies (Drosophila melanogaster) are diploid organisms with 4 chromosome pairs: a. How many chromosomes will each gamete have after meiosis? b. How many copies of chromosome 2 will each gamete have? Explain your answer. c. Assume Gene X is located on chromosome 3, how many alleles of gene X will each gamete have? Why?
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Since gametes are haploid cells, they will have half the number of chromosomes as the diploid parent cell. After meiosis, each gamete will have: $$\frac{1}{2} \times 8 = 4$$ So, each gamete will have **4 chromosomes**. Since each gamete has one chromosome Show more…
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