Which of the following occurs during prophase? A. the chromosomes line up in the center of the cell
B. the sister chromatids separate

C. two new identical nuclei are formed

D. the nucleolus disappears and the nuclear membrane breaks down

A. the chromosomes line up in the center of the cell

Explanation:

it all depends on the are the statements? ?

these are common warning signs of overtraining syndrome:

washed-out feeling, tired, drained, lack of energy

mild leg soreness, general aches, and pains

pain in muscles and joints

sudden drop in performance

insomnia

headaches

decreased immunity (increased number of colds, and sore throats)

decrease in training capacity/intensity

moodiness and irritability

depression

loss of enthusiasm for the sport

decreased appetite

increased incidence of injuries.

a compulsive need to exercise