The monthly cycle of changes in the female reproductive system is called the cycle.
a.
menstrual
c.
phase
b.
lunar
d.
fertilization
ANSWER IS A

The fertilized egg is also known as .
a.
egg
b.
ovary
c.
sperm
d.
zygote
ANSWER IS D

The hormone controls the development of male characteristics.
a.
aldosterone
c.
estrogen
b.
oxytocin
d.
testosterone
D

What have we learned from fossil evidence about evolution? a) it is an abrupt change. b)the process is observable. c) it takes place during one lifetime only. d)the most complex traits are always selected.

Explain the significance of the increased cell specialization of the volvocine line

Which of the following statements is true about the relationship between genetic variation and natural selection? a. genetic variation must be present in a population before natural selection can act on it. b. genetic variation arises in a population as a result of natural selection. c. natural selection can act on a population whether there is genetic variation within the population or not. d. after natural selection acts on a population, the amount of genetic variation in the population always increases.