Lecture 18

Lecture 18 - Lecture 18 Reproductive hormones are steroids...

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Lecture 18 Reproductive hormones are steroids o Steroid hormones impact genes Sexual reproduction – something that results in new genetic combinations Sexual and Asexual common in plants and animals o Asexual reproduction – 1 parent produces genetically identical offspring Many offspring rapidly Budding, fission, fragmentation/regeneration Plants – reproduction through runners or shoots o Sexual reproduction – fusion of gametes from 2 parents: genetic variation Red Queen hypothesis (alice in wonder land) – coevolution of how sex came about Parthenogenesis – eggs that produce offspring w/o the benefit of sperm Not identical to the mother This tells us that sperm does more than add additional genetic material Hermaphroditism – both female and male system We are all carrying rare harmful mutations – which is not effect children unless we mate with a close relative who may also carry those mutations No human hermaphrodite because sexual organs come
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Lecture 18 - Lecture 18 Reproductive hormones are steroids...

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