36 - Lecture 36 Genetic Conservation 1 Why are genetics...

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11/21/10 1 Lecture 36: Genetic Conservation 1. Why are genetics important? 2. Genetics 101 3. Consequences of genetic loss 1. Example: cheetahs 4. Ways of losing genetic diversity 5. Examples: Channel Island fox; Przewalski’s horse (from last lecture) Often, people mistake successful invaders for native species Iceplant ( Carpobrotus edulis ) Why is genetics important? 1. “Rate of evolutionary change is affected by amount of ______________________.” Considered the fundamental theorem of natural selection Why is genetics important? • 2. Heterozygosity is _____________ for individuals. • 3. Genetic diversity is the sum total of all information in living organisms (think “products”) Genetics 101: definitions • 1. Alleles – version of each gene inherited from parents. AA Aa aa 2. Homozygous – having two of the same allele for a trait. 3. Heterozygous – having 2 different alleles for a trait. Genetics 101: definitions [Heterozygosity = measure of how many genes are in Aa condition] 4. Mutations – mistakes made in copying and creating genetic material.
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