perimenopause

a. is marked by limited changes in reproductive hormones

b. occurs five to eight years after the final menstruation

c. is the period after a woman's last menstruation

d. is the period from a woman's first irregular cycles to her last menstruation

e. is marked by only trivial symptoms

a. is marked by limited changes in reproductive hormones

Explanation:

g1

choices:

a. g2. b. g1. c. m

cell division has two checkpoints namely, g1

checkpoint and spindle assembly checkpoint. the checkpoint which determines if

division has properly occurred is the g1 checkpoint. at this point, is a damage

in the dna is detected or  the has not reach the optimum size, the cell is

stopped in g1 and is not allowed to proceed to further process.

source:

answer: c

explanation: