How does meiosis help the chromosome number of a species remain constant? a) by causing gametes to have half the species' chromosome number
b) by combining all the pairs of the species' chromosomes
c)by eliminating the chromosomes that the species no longer uses
d) by saving energy so the species can maintain its chromosomes

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.

bru what tyep of qus is dis

you can have just about every answer you can think of