Survey
* Your assessment is very important for improving the workof artificial intelligence, which forms the content of this project
* Your assessment is very important for improving the workof artificial intelligence, which forms the content of this project
Fetal origins hypothesis wikipedia , lookup
Designer baby wikipedia , lookup
Polymorphism (biology) wikipedia , lookup
Adaptive evolution in the human genome wikipedia , lookup
Gene expression programming wikipedia , lookup
Koinophilia wikipedia , lookup
Hardy–Weinberg principle wikipedia , lookup
Genetic drift wikipedia , lookup
Population genetics wikipedia , lookup
Week 4 Evolution Ch 7, approx. p.250 Highlight in review books if you’d like Homologous vs. analogous structures bird wing, whale flipper; Similar evol. origins, different functions = divergent evolution bird & bat wing,; Similar functions, different evol. origins = convergent evolution Molecular evolution- rate of change in a gene Hardy-Weinberg Principlemathematical prediction of gene frequencies in a population p= frequency of dominant allele q= frequency of recessive allele p+q=1 sperm p p q pp pq pq qq eggs q So, p2 = homozygous dominant 2pq = heterozygous q2= homozygous recessive Practice problem: In a population, the frequency of homozygous curly hair is 64%. What % of the population has curly hair? CC or p2 = .64 p= .8 need to add in Cc or pq to the percent p + q =1 So, .8 + q = 1 q = .2 then p2 = .64 and 2pq= 2(.8 x .2) =.32 Add them together, .64 + .32 = .96 or 96% have curly hair