Duchenne muscular dystrophy is a sex-linked disorder. if a father has a normal x chromosome and the mother is a carrier, what are the odds that a male child would have duchenne muscular dystrophy? what are the odds for a female child to have the disease or be a carrier?

Which of the following factors would not contribute to allopatric speciation? a) a population becomes geographically isolated from the parent population.b) the separated population is small, and genetic drift occurs.c) the isolated population is exposed to different selection pressures than the ancestral population.d) different mutations begin to distinguish the gene pools of the separated populations.e) gene flow between the two populations is extensive.