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ANT208H1 (76)
Dan Sellen (28)

lec 8 med anthro.docx

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Dan Sellen

lec8 382012 90900 AM ReproductionWhy sexHuman reproduction o ConceptionEarly pregnancy lossNausea and vomiting during pregnancy NVPBirthing o Reproductive health in the modern worldWhy sexual reproductionReproduction and sex are different o Making copies versus jumbling genes o Sex is not essential for life or reproductionBudding egplantsbacteriaParthenogenesis aphidsrotifers o Other ways to share genetic material eg Bacterial conjugationSexual reproduction is costly an hard to explainAsexual reproduction is twice as efficient avoids infection o You produce offspring that are all female and they can reproduce herself without any imput of any indivudual o Replicate yourself twice as fasttwo fold cost of sex progenygene copies o do better more copieswhat fitness advantage outweighs benefit of asexualityWhat is the point of males o Can not reproduce o Just produces sperm o Must have other organism to nurture them to become offspringWhy are there gendersSexual reproduction o Produces only offspring that is 50 related to 1 parent and 50 other parent not 100from mother like in asexual
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