BISC104 Chapter Notes - Chapter 8: Twin, Heritability, Gel Electrophoresis

• School: University of Delaware
• Department: Biological Sciences
• Course: BISC104
• Professor: ALL

Document Summary

Measures % of phenotypic variation due to genes for a certain population at a certain time. Parent and child share 50% of their genes. *****only for this population at this time in this environment. So try to separate genetic influences from environment. Even when h is high, environment can still have an effect. According to mendel, he would expect the offspring to be either all red or all white in first generation of mix between white and red snapdragons. Red x hite = pink (snapdragon flowers) Offspring will have all 3 different colors 1 red: 2 pink: 1 white. May sometimes depend on the phenotype examined. Heterozygote is healthy (complete) but has a lower enzyme level (incomplete) Tt: no enzyme: tay sachs disease 0. Both alleles are fully expressed in the heterozygote. Red coat x hite coat in cattle = red and white (roan) coat. Allele ia: enzyme for antigen a= type a (iaia or iai)