Biology

If a women does not produce enough progesterone supplementation to keep her pregnancy viable. Tis is necessary for approx 3 months, or the first trimester. Why can she stop taking progesterone after this period? The placenta takes over progesterone production

What structure on the ovary is critical to maintain the pregnancy? What hormone does it produce? What are its functions? hCG tells the corpus luteum (CL) to keep secreting estrogens and progesterone. Prevents menstruation

The mothers body becomes aware of the developing embryo following implanation, before the women knows she is pregnant. What hormone must be produced by the growing fetal tissues to signal the mother’s body to maintain the pregnancy? this is the hormone detected in pregnancy test kits Human chorionic gonadotropin (hCG)

What is the name of the uterine lining where the blastula implants? Endometrium

How long does it take for the fertilized egg to reach the uterus? What changes are taking place during its journey to the uterus? 4 or 5 days cleavage events to produce many small cells. Zygote -> morula -> blastocyst

Hormones of Pregnancy & Stages of Embryonic Development

Try this problem. A heterozygous woman carrying the recessive gene for hemophilia marries a normal man. Assume the dominant gene is XH and the recessive gene is Xh . the woman’s genotype, then, is XHXh and her husband’s is XHY. NOTE: do NOT put an allele on the Y!!! What is the potential percentage and […]

What is the probability that they have three children with type A blood? 1/2 x 1/2 x 1/2 = 1/8 or 0.125

What blood types are possible for their offspring? A & B

Two parents with blood genotypes AB and OO have children. Complete Punnett square