lecture 1-23 Mendelian genetics

lecture 1-23 Mendelian genetics - genotype, true-breeding,...

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# chromosomes? 6 # DNA molecules? 12 # tetrads? 3 # possible gametes? 4 # chiasmata? 4 Is this cell haploid or diploid?
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Learning objectives – Heredity and Mendel Chapter 14 • Distinguish between the “blending” hypothesis and the “particulate” hypothesis as alternative explanations of heredity. • Know that the law of segregation refers to the separation of the two alleles of a gene during meiosis; and, the law of independent assortment refers to the movement of each gene (pair of alleles) independent of the movement of other genes during gamete formation. • Explain how to predict the probability of specific phenotypes, by Punnett Square method; by the rule of multiplication method. • Understand that probability is not the same as prophesy • Terms to know include: homozygous, heterozygous, P, F-1, & F-2 generations, mono hybrid, dihybrid cross, test cross, dominant, recessive alleles, phenotype,
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Unformatted text preview: genotype, true-breeding, hybridization, character, trait,. .. One possible explanation of heredity is a blending hypothesis The idea that genetic material contributed by two parents mixes in a manner analogous to the way blue and yellow paints blend to make green An alternative to the blending model is the particulate hypothesis of inheritance: the gene idea- Parents pass on discrete heritable units, genes Gregor Mendel Documented a particulate mechanism of inheritance through his experiments with garden peas By following a single trait, Mendel observed:- Offspring from a F1 cross were monohybrids, heterozygous for one character and thus derived the law of segregation The two alleles (of a pair) for a heritable character separate (segregate) during gamete formation and end up in different gametes...
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lecture 1-23 Mendelian genetics - genotype, true-breeding,...

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