Help please , thanks in advance :)

1.) b

2.) 23

C. It has the smallest size in chromosomes

Explanation:

Women have two X chromosomes. Men have a single X (from their mother) and the male-specific Y (from their father). The genetic differences between men and women lie in these sex chromosomes. ... One of these 45 Y-borne genes (SRY) determines that a baby with XY chromosomes will develop as a boy.

answer; i believe the answer is (polygenic inheritance;

"menstrual cycle is a complex cycle that consists of several processes. order of occurrence of steps in menstrual cycle are as follows:

1. high progesterone levels maintain the endometrium lining of the uterus.

2. endometrium lining breaks down and low levels of estrogen stimulate the pituitary to release fsh and lh.

3. fsh and lh stimulates the follicles to develop and the oocyte to produce estrogen.

4. rising estrogen levels suppress fsh production and development of other follicles.

5. a spike in lh causes follicle to rupture.

6. a breakdown of corpus luteum causes progesterone level to drop."