*MINIMUM 400 WORDS* Based on the information in the case study, Animal Reproduct
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Question
*MINIMUM 400 WORDS* Based on the information in the case study, Animal Reproduction, please answer the following questions. * Andrea is pregnant and is trying to calculate the time of conception.What is time of conception and how is it determined? * What are the functions of GnRH, FSH LH, estrogen and progesterone in pregnancy? * Andrea is having twins but the babies have two different fathers.Explain the difference between fraternal and identical twins. Which are these?How could the hahies have different fathers?Explanation / Answer
Time of conception:
1. The average length of menstrual cycle is calculated by noting the first and last day of menstrual cycle.
2. Ovulation occurs about 2 weeks before menstruation starts.
If average days of menstrual cycle is 28 days, then ovulation day is day 14. Accordingly, concept days are estimated as 5 days through the 14th day. 3 days 12th, 13th and 14th would be most fertile days.
GnRH: Gonadotropin release hormone
FSH: Follicle Stimulating Hormone:
In sexually-matured Females-
LH: Luteinizing Hormone:
In sexually-matured Females-
Identical twins:
Fraternal twins:
Fraternal twins only may have two separate fathers. Two separate sperms of two different male individuals may fertilize two separate eggs at similar time, causing implantation together and development together as twins.
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