BIO 4113 Lecture Notes - Lecture 9: Pelvis, Mate Choice, Pleiotropy
Document Summary
Reproductive success-average number of offspring generated by a phenotype. If you get eaten before you can reproduced - your fitness is zero. Proxies - survivorship, size of animal, replacement rate (ect. ) Population genetics probability of survival mating success - number of mates attracted. Invigorous group of mules mares and female donkeys go towards this mule, but he is sterile. 90% may survive until adulthood and 7. 2 is the average mates, but his fecundity is 0 so it is still zero. You cannot use one proxy for fitness because it is not accurately telling. Widowbirds have several species and have great display plumage highly maintained traits that are detrimental to survival, but good for mating. The longer your tail is, the less likely you are to survive. Same genes - pleiotropy - are affecting two things, survivorship and mate choice. They are the ones that are influencing the shape of narrower hips.
