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Genetics made simple

Genetics made simple. Mendel’s Pea Garden!. Good to know…. Allele = an alternative form of a gene Example: Gene = height Alternative forms = Tall & short Homozygous dominant / true breeding = Homozygous recessive / true breeding = Heterozygous / Hybrid = Genotype =

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Genetics made simple

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  1. Genetics made simple Mendel’s Pea Garden!

  2. Good to know… Allele = an alternative form of a gene Example: Gene = height Alternative forms = Tall & short Homozygous dominant / true breeding = Homozygous recessive / true breeding = Heterozygous / Hybrid = Genotype = Phenotype =

  3. Genetics Practice Problems - Simple Worksheet 1.  For each genotype below, indicate whether it is heterozygous (He) or homozygous (Ho)

  4. 2.  For each of the genotypes below determine what phenotypes would be possible. 

  5. 3.  For each phenotype below, list the genotypes (remember to use the letter of the dominant trait)

  6. Monohybrid Punnett Squares P1 generation F1 generation F2 generation

  7. 4.  Set up the Punnet squares for each of the crosses listed below. Round seeds are dominant to wrinkled seeds. What percentage of the offspring will be round? _______________ Rr x rr What percentage of the offspring will be round? _______________ RR x rr What percentage of the offspring will be round? _______________ RR x Rr Rr x Rr What percentage of the offspring will be round? _______________

  8. 5.  A TT (tall) plant is crossed with a tt (short plant).   What percentage of the offspring will be tall?  ___________

  9. 6.  A Tt plant is crossed with a Tt plant.  What percentage of the offspring will be short?  ______

  10. 7.  A heterozygous round seeded plant (Rr) is crossed with a homozygous round seeded plant (RR).  What percentage of the offspring will be homozygous (RR)?  __________

  11. 8.  A homozygous round seeded plant is crossed with a homozygous wrinkled seeded plant. What are the genotypes of the parents?  __________   x  __________ What percentage of the offspring will also be homozygous?  ___________

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