BIOL239 Study Guide - Blood Type, Genetics (Journal), Gregor Mendel
17 Apr 2013
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Document Summary
Belyaev artificially bred foxes happy foxes vs. Phenotype observable characteristic, can also be behaviour, referred to as a trait. Genotype- genetic make-up, version of the gene. Monohybrid cross matings between individuals that only differ one trait. Example: one gene in humans for eye colour. Allele alternative form of a single gene. Polymorphic more than one wiltype allele, allele frequency greater than 1%, several alleses that occurs normally in a population. Monomorphic only one wild type alle, only one allele above 1%, one alle that is normally present in a population. Used selective breeding to produce true-breeding lines of peas. The two alleles for each trait separate (segregate) during gamete formation, then unite at random, one from each parent at fertalization. At the dna level, alleles vary in nucleotide sequence. This can result in: new amino acid sequence, change in amount of protein, example: garden peas.
