Which ostrilopes were more likely to survive and became more common in the population?

Take a guess, what do you think?

Afemale  with a mutation in one copy of a gene on the  x  chromosome is said to be a carrier for an  x-linked condition. a  male  with a mutation in a gene on the  x  chromosome is typically affected with the  condition.  x-linked recessive diseases  can occur in both  males  and  females. hope this !

Are there any choices ?