HEL PLEAS Can males (Xy) be carriers of sex-linked traits without being affected? Explain
using x chromosome, carrier and placement of trait (where is sex linked trait
located?)

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.