You do a cross involving four unlinked, autosomal genes (A, B, C, and D). The genotypes of the parents are Aa bb Cc Dd and Aa Bb Cc dd. What is the probability of offspring that have the genotype A_ Bb Cc dd

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the corpus luteum secretes estrogens and progesterone. the latter hormone causes changes in the uterus that make it more suitable for implantation of the fertilized ovum and the nourishment of the embryo. if the egg is not fertilized, the corpus luteum becomes inactive after 10–14 days, and menstruation occurs.

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