BIO 1130 Lecture Notes - Lecture 3: Sperm Competition, Chromosome, Disruptive Selection

• School: University of Ottawa
• Department: Biology
• Course: BIO 1130
• Professor: Jon Houseman

Document Summary

Disruptive selection: when there is a gap inside the bell curve, there are 2 bell curves that are connected, example, there are different beak sizes for finches. When the conditions are bad, plants don"t set seeds so there are middle seeds for the middle sized beaks finches. This created a space in the middle of the distribution curve. Non random mating interbreeding: as the generations continue to grow, (1-4) there is an increase in homozygotes and decrease in heterozygotes, the allelic count in the population has not changed. Causes them to be picky about their males males don"t put in much effort and not being too concerned. Assuring that they will be lucky enough to find a female. Sexual selection: on males: female choice (the females judge the males to see if they are suitable) If he is very healthy; he will have a better chance of mating with a female: sperm competition.