Which of these sentences is true about genetic variation?
a. mutations always carry out beneficial genetic variations in an organism
b. mutations always carry out harmful genetic variations in an organism
c. mutations are one of the key factors in genetic variations

Previous pagenext pagepage 3 of 10question 3 (1 point)which of the following consist of cells that do not have a nucleus? of the above

The rate at which molecules water and oxygen can enter a cell is determined by the-

Which statement about inheritance is true? o girls get most of their traits from their moms, boys get most of their traits from their dads. o male offspring will always have an x-linked genetic disease if the mom is a carrier o fathers always determine the gender of the offspring in humans. o males never have y chromosomes.