3_22_07 - Biology 130 Genetics/Mendel Mendel used...

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March 22, 2007 Biology 130 Genetics/Mendel Mendel used mathematics to prove all of this Law of segregation o alleles (for same character) are separated from each other when distributed onto gametes o found in anaphase I Law of independent assortment o Alleles from characters can independently (randomly) combine when distributed onto gametes o Only found in di-hybrids – seed color and seed shape o Also in anaphase I o Only happens when alleles are on different chromosomes Mendel probably threw out a lot of data because there is no way all of the traits listed could have been chosen so well Majority of our genes are linked Law of independent assortment is the exception not the norm. Most of our traits are found on chromosomes Patterns of Expression Pedigrees o Mother = round o Dad = square Dominant – Recessive inheritance. Dominant characteristics listed o Huntington’s Disease – deadly neurological disease o
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3_22_07 - Biology 130 Genetics/Mendel Mendel used...

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