Which of the following discoveries is most crucial to explaining why all organisms share the same genetic code? Vesicles containing the same organelles
Microspheres' similarities to modern meteorites
RNA's ability to self-catalyze
DNA's ability to absorb carbon molecules

RNA's ability to self-catalyze.

"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."