The somatic cells of the Drosophila fly contain 8 chromosomes. Determine the number of chromosomes and DNA

| May 6, 2021 | education

The somatic cells of the Drosophila fly contain 8 chromosomes. Determine the number of chromosomes and DNA molecules in cells during spermatogenesis in the reproduction zone and at the end of the gamete maturation zone. Justify the answer. What processes occur in these zones?

The somatic cells of the Drosophila fly contain 8 chromosomes, and, therefore, 8 DNA molecules. In the process of spermatogenesis, several zones are distinguished: reproduction, growth, maturation and formation. In the multiplication zone, cells divide by mitosis and, therefore, the number of chromosomes and DNA is also preserved in the resulting cells. The maturation process is a division by meiosis, the result of which is the formation of cells with a haploid set of chromosomes. This means that in mature gametes there will be 4 chromosomes and a DNA molecule.



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