ANT 230 Lecture Notes - Lecture 7: Hemoglobin, Sickle-Cell Disease, Macroevolution
12 Aug 2016
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Document Summary
Gene a sequence of dna that codes for a protein. Locus interchangeable, a location of a gene. Allele different variations of the same gene. Genotype - genetic makeup (can mean all, or just one for a specific trait) Phenotype physical expression of a gene (dimples or no dimples) Monogenic dimples are example because only one gene codes for dimples. Polygenic lots of genes effect a single trait, height for example. A change in allele frequency from one generation to the next. Allele frequencies are indicators of the genetic makeup of a population the members which share a common gene pool. Allele frequencies refer to a percentage of all the alleles at a locus that account for one specific allele. Small genetic changes that do not result in a new species. Example is variation in abo blood types, skin color changes. A molecular alternation in genetic material (uau to uaa)
