Mendelian genetics

Mendelian genetics - OKHow About Two Traits?? Dihybrid...

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Genotype & Phenotype
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Mendel’s Pea Plants & Their Traits
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Punnett Square Example:
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Try these Punnett square problems: 1. What are the phenotypic & genotypic ratios for a cross between two heterozygous purple kernel corn plants? 2. What are the phenotypes of the offspring of a heterozygous purple kernel corn plant and a homozygous dominant? 3. In rabbits, black fur is dominant over white fur. A rabbit breeder who wants all black furred rabbits on his farm has a black furred male rabbit of unknown genotype. How could this farmer determine the rabbits genotype by breeding him with his female rabbits of known genotypes?
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Punnett Square Problems Short hair in rabbits is coded for by a dominant gene, long hair by a recessive gene. What percent of long-haired rabbits would be expected if we mated a heterozygous rabbit with a long hair rabbit?
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Unformatted text preview: OKHow About Two Traits?? Dihybrid Punnett Square Say we took a couple of Mendel pea plant traits. Purple flowers are dominant over white and Tall pea plants are dominant over ort. What is the phenotypic tio hen short. What is the phenotypic ratio when a heterozygous pea plant for both traits is crossed with a homozygous recessive (for both traits) pea plant? Hint: this requires 16 total squares!! Dihybred Cross Chin fissure (butt chin) is dominant over smooth chin Let the letter C represent this trait imples are dominant over no dimples Dimples are dominant over The letter D represents this trait A man and woman, both heterozygous for both traits, marry and have a child What is the probability this child will have no dimples or a butt chin?...
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This note was uploaded on 08/13/2010 for the course BIO BIO 213 taught by Professor O'neil during the Winter '10 term at Cal Poly.

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Mendelian genetics - OKHow About Two Traits?? Dihybrid...

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