【简答题】(Complete the answer with no more than 3 words) Q: What is the role an effective beginning can play in your presentation? A: It can draw ________________ and set the proper tone.
It initiates the X inactivation process in females.
B.
It is located on the X chromosome and causes the X to pair with the Y chromosome during male meiosis.
C.
It is located on the Y chromosome and initiates the developmental pathway toward the male phenotype.
D.
It is located on an autosomal chromosome and represses expression of autosomal genes in order to balance their expression level with genes on the X chromosome.