Answer:
A woman is born with all of her eggs, which are stored in her ovaries. The ovaries also make the hormones estrogen and progesterone, which control her period (menstruation) and the release of eggs (ovulation). Menopause happens when the ovaries no longer release an egg every month and menstruation stops.
D i believe i’m sorry if this is not correct if not try c
Ref: online search (Changes to short stretches of nucleotides are called gene-level mutations, because these mutations affect the specific genes that provide instructions for various functional molecules, including proteins. Changes in these molecules can have an impact on any number of an organism's physical characteristics.)
Answer:
B, Kristen can find out the sex of her fetus using ultrasound as early as 14 weeks but most doctors schedule an ultrasound at around 18 to 21 weeks
