Which characteristic can be inherited?
a. ability to roll the tongue
b. the length of hair in a human
c. the ability to play piano
d. the appetite of a puppy

ANSWER IS:

B. the length of hair in a human

this is a good question! i'll do some research and come back when i have the answer!

the corpus luteum secretes estrogens and progesterone. the latter hormone causes changes in the uterus that make it more suitable for implantation of the fertilized ovum and the nourishment of the embryo. if the egg is not fertilized, the corpus luteum becomes inactive after 10–14 days, and menstruation occurs.

i hope this : )