18. When the mature follicle releases an egg, the egg is alan a. Oogonium
b. Primary oocyte
c. Secondary oocyte
d. Ovum
e. Tertiary oocyte
19. This hormone causes thinning of the cervical mucus,
a. estrogen
b. progesterone
C, LH
d. FSH
e, Sperm
20. This hormone is the thermogenic hormone. It causes an increase in basal body temperature,
a estrogen
b. progesterone
C. LH
d. FSH
e. GnRH

the relative atomic mass of an element is the mass of one atom of that element, relative to 1/12th of the mass of a  1212c atom. to convert to an absolute mass in kg, it is necessary to multiply by  1.661×10−271.661×10−27.

the relative atomic mass is roughly equal to the number of neutrons, plus the number of protons, in the nucleus of the atom.

for elements with more than one stable isotope (different types of nucleus with different numbers of neutrons but the same number of protons), the quoted mass is usually the average mass, weighted by the relative abundance of the different isotopes.

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.