BIO220H1 Lecture Notes - Pleiotropy, Repeated Measures Design, Factorial Experiment
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BIO220H1 Full Course Notes
Verified Note
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Longevity - has constraints on evolution and may take the shape of trade offs. Dna repair may be energetically costly - which may take away from fecundity. More offspring, the shorter you live - reproductive effort takes away from dna repair, etc. Pierce flies and suck their guts out - females build eggs out of the energy from this food. Reproductive rate lot of food = lot of eggs. If there are reproductive costs, then longevity will be lessened. Females reproducing at a low rate lived for a long time - dramatic example of reproductive costs. The quality of eggs - an indication of longevity and senescence. Before reproduction ceases, they produce eggs that fail to develop. Trade offs are involved in the evolution of aging. 1700 - mortality in mothers trend indicates better medical practices and cleanliness. Production of offspring does seem to affect survivalship - diminishes the survival advantage of females.
