What is the path that sperm travels, starting from the seminiferous tubules and ending at the location of fertilization?

Color blindness is a recessive trait. the gene for color blindness is on the x chromosome. the family tree below shows the trait of color blindness. the only unknown is the mother in the first generation

How can a geological time scale best be reconstructed? a) comparing vestigial structures in living species b) comparing homologous structures in living species c) examining homologous structures in fossil remains d) examining the written records of scientists from past cultures

Idon’t know the answer and i’ve been stuck on it for a while now skskskskks