After the X chromosome is inactivated, it will

Why should the united state be concerned about air pollution in china?

Advances in technology have enabled scientists and researchers to better study the evolutionary relationships between species

Guinea pig coat color is determined by a single gene. the allele for black coat color is dominant to brown. in a cross between twoblack-haired guinea pigs, 20 offspring are born. if both parents were heterozygous, probability would predict that approximately howmany of the 20 offspring would have brown hair?