Which statement is most closely related to the modern theory of evolution? a. characteristic that are acquired during life are passed to offspring by sexual reproductionb. evolution is the result of mutations and recombinations, onlyc. organisms best adapted to a changed environment are most likely to reproduce and pass their genes to offspringd. asexual reproduction increases the survival of species

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.