Which causes a drop in female hormone levels?

the onset of the menstrual flow

if an egg is released from the ovary

if the uterine wall thickens

if the egg is not fertilized

I will give brainliest

Indicate the coat color and the proportion of offspring with that color for each of the following crosses of rabbits. assume all are homozygous. albino x albino a) 1/4 chinchilla, 3/4, agouti b) 3/4 albino, 1/4 chinchilla c) all albino