Notes 10-27-08

Notes 10-27-08 - Monohybrid-deals with a single locus...

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Monohybrid-deals with a single locus Dihybrid cross-deals with two loci True breeding Alleles-alternate versions of genes For each character, one allele comes from the mother, and the other from the father One allele expressed, and not the other one Law of segregation-two alleles present in an individual for a character are separated during gamete formation (one gamete gets one or the other allele during gamete production, not both) Homozygous-two copies of the same allele at the locus Phenotype-expression of alleles Law of independent assortment-alleles at different loci on assort independently into separate gametes Genetic diversity increases due to meiotic division Thomas Hunt Morgan-crosses of fruit flies -very short generation time sex-linked trait-gene carried on the x chromosome -color blindness carried on the x chromosome pedigree-family history of a particular trait sex determination for some insects, one x is male, two x is female birds fish and other insects-female is heterozygous for sex chromosomes, but the male is
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This note was uploaded on 05/20/2010 for the course BIOL 101 taught by Professor Fevzidaldal during the Fall '08 term at UPenn.

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Notes 10-27-08 - Monohybrid-deals with a single locus...

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