What type of blood vessels returns blood to the heart? If you get this right I will give you Brianliest even if you attempt.
Not lying​

there is no stairs in bungalow

explanation:

poof

c) 50% there are four chromosomes. after crossing over, 2 of the four have been changed. that means any gamete has a 2 in 4 chance or 50% chance of receiving the mutated chromosome.

i believe the answer would be b. hope it : )