Several are correct:
Affect males more than females
Can be carried by females
Are always expressed by males
A bit of explanation: sex linked genes are carried on the X chromosome. That’s why it affects males more than females...they only get one x from their mom. Females can be affected IF they receive 2 bad X chromosomes. So with a male, the bad gene on the x is always expressed. Color blindness is a good example of this.
Sexual reproduction requires both a female and a male partner.
Asexual reproduction requires just one parent basically.
HOPE THIS HELPS YOU! ^_^
Answer:
50% or 1/2 in fraction form
Genetic variation<span> occurs </span>mainly<span> through DNA mutation, gene flow (movement of genes from one population to another) and sexual reproduction</span>