Ecologists have studied the galapagos islands for a long time because of the diversity of the populations they possess. it is thought that small colonies of finches emerged on each of these small islands, each small population carrying only certain alleles of the parent population. over time, the emerging populations varied greatly from one another, leading to the development of new species. which mechanism of speciation best describes this scenario?
is d

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.

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