6. A species of a squirrel has twenty chromosomes in each gamete (egg and sperm cell). A muscle cell in this squirrel would have how many chromosomes?
a. 60 chromosomes
b. 20 chromosomes
c. 40 chromosomes
d. 80 chromosomes

the menstrual cycle – higher tier. negative feedback mechanisms affect the production of hormones in the menstrual cycle. oestrogen also stimulates the release of lh (luteinising hormone) from the pituitary gland, which in turn controls the production of progesterone.

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a=c and then d= c because of the band so you get ac/dc and you add them together you get sound waves

for example, no new evidence will demonstrate that the earth does not orbit around the sun (heliocentric theory), or that living things are not made of cells (cell theory), that matter is not composed of atoms, or that the surface of the earth is not divided into solid plates that have moved over geological timescales .