Biologych10

Biologych10 - 10.1 Mendel's Insight into Inheritance...

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10.1 Mendel’s Insight into Inheritance Patterns Contrary to once trusted “blending” theory, only the frequency of each version of a trait among individuals of a population may persist/change over time Before Darwin’s theory, a monk, Gregor Mendel, had already guessed that sperm and eggs carry distinct units of info about heritable traits - After an alyzing certain traits of p e a plants through s everal g en erations, h e found indirect bu observable evidence of how g en es are trans mitted Hybrids → offspring that h ave inherited non-identical alleles for the trait Homozygous → identical p air of alleles on ho mologous chromoso m es Heterozygous → differing alleles on ho mologous chromoso m es Dominant if m a sks trait of a ny recessive allele p aired with it Genotype → refers to p articular alleles that a n individual carries Phenotype → refers to a n individual’s observable traits P = parents, F 1 = first generation, F 2 = second generation 10.2 Mendel’s Theory of Segregation Monohybrid crosses use F 1 offspring of parents that breed true for different forms of a trait
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This note was uploaded on 04/01/2008 for the course BIOL 101 taught by Professor Hogan during the Spring '08 term at UNC.

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Biologych10 - 10.1 Mendel's Insight into Inheritance...

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