What is an allosteric site? 1) The site on an enzyme where the substrate binds.
2) The area on a competitor molecule that inhibits an enzyme reaction.
3) The area on an enzyme that binds the end- product of some metabolic pathways
4) The active part of a non-competitive inhibitor of an enzyme reaction

answer; a male inherits only one allele of the x-linked gene controlling hair color;

"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."