The middle primary brain vesicle, the mesencephalon, gives rise to which adult brain structure? the middle primary brain vesicle, the mesencephalon, gives rise to which adult brain structure? medulla

the level of progesterone is low at the pre-ovulatory phase of the cycle but it gradually increases and the levels are high at the luteal phase. if pregnancy occurs, the level of progesterone will be high throughout the pregnancy.

if egg is fertilized and the mother gets pregnant, progesterone starts preparing the uterus for the implantation. it starts building up the lining of uterus and make it hostile of the period of pregnancy.

i believe it is c: genes for body color and wing size are inherited separately from each parent.

where in your body is there an enzyme that does function at a high or low ph? what is the name of that enzyme and its function?