In: Biology
Sexually reproducing organisms use a variety of strategies to
compensate for the gene dosage differences arising from different
numbers of X-chromosomes present in males and females. Please
describe how dosage compensation of X-chromosome is achieved in
mice and Drosophila (fruit flies)?
In case of Drosophila male has only one X chromosome and female has two chromosome. In this case male two fold the transcription of X chromosome in male to compensate with female.
while mouse has same sex chromosome compared to humans . so there is inactivation of one X chromosome in female for dosage compensation of X chromosome.