Which of the following occurrences would most likely result in an increase in allele frequencies in a population?

a. A disease killed off 3/4 of the members of a herd of wildebeest.

b. A third of the baby sea turtles that hatch are eaten by predators.

c. A school of trout that were separated by a dam.

d. A flock of ducks joined another group living near a lake.

the level of progesterone is low at the pre-ovulatory phase of the cycle but it gradually increases and the levels are high at the luteal phase. if pregnancy occurs, the level of progesterone will be high throughout the pregnancy.

if egg is fertilized and the mother gets pregnant, progesterone starts preparing the uterus for the implantation. it starts building up the lining of uterus and make it hostile of the period of pregnancy.

unicellular organisms, like bacteria, are able to perform all life functions within one single cell. multicellular organisms need many different types of cells to carry out the same life processes. each of these special types of cells has a different structure that it perform a specific function.