dihybridcrossproblemsanswers - Division 2 MST Genetics Unit 2011-2012 Dihybrid Cross Problems Directions For each of the problems below complete the

dihybridcrossproblemsanswers - Division 2 MST Genetics Unit...

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Dihybrid Cross Problems Directions : For each of the problems below, complete the following on a separate sheet of paper: A.)List the genotype of each parent described B.)Use a Punnett square to predict the possible outcomes of a cross between the 2 parents. C.)List the genotypes and the number of that genotype present in the offspring for each cross (can write as a ratio). D.)List the phenotypes and the number of that phenotype present in the offspring for each cross (can write as a ratio). Symbols (for pea plant traits) : T: tall Y: yellow seeds R: Round seeds P: Purple flower t: short y: green seeds r: wrinkled seeds p: white flower Problems : 1.) Cross a heterozygous tall and round seed pea plant with another heterozygous tall, round seed plant. 2.) Cross a pea plant that is heterozygous for purple flowers and homozygous dominant for yellow seeds with a plant that is heterozygous for purple flowers and homozygous recessive for green seeds. TR Tr tR tr TR TTRR TTRr TtRR TtRr Tr TTRr TTrr TtRr Ttrr tR TtRR TtRr ttRR ttRr tr TtRr Ttrr ttRr ttrr PY PY
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  • Spring '16
  • Genetics, Zygosity, Genotypic Ratio

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