HDP 1 Lecture Notes - Lecture 3: Marsupial, Sexual Reproduction, Transglutaminase
29 Sep 2016
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Introduction to human evolution, lecture by pascal gagneux. You need proteins, fats and sugars (glycan) Dna rna proteins enzymes. Dna segments in egg and sperm and in every cell of the body. Sexual reproduction: reproduction of chromosomes, uniparental (clonal) inheritance. There is a lot of genome in the sperm and egg; it is impressive how so much genome can fit into such a small place. The male must introduce the sperm into the female tract. Opportunities and cryptic female choice: the sperm must travel a long way and get hit by leukocytes, antibodies. We can take the dna of all the organisms and see where we are and how we compare (phylogeny) Fitting a genome into a cell: genome packaging. 22000 protein coding genes 2% of total dna. If we are apes, we are really strange ones. The heavier the woman, the more they wean their children. Lacatation lasts from four days in hooded seals to four years in chimpanzees.
