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Published byKathryn Simmons Modified over 9 years ago
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Genotype & Phenotype
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PhenotypeGenotype HeterozygousHomozygous
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Phenotype What an organism looks like (photo) Ex: brown hair, green eyes Genotype HeterozygousHomozygous
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Phenotype What an organism looks like (photo) Ex: brown hair, green eyes Genotype Combination of alleles (genes) Ex: Bb, rr HeterozygousHomozygous
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Phenotype What an organism looks like (photo) Genotype Combination of alleles (genes) Heterozygous Different Ex. Bb Homozygous
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Phenotype What an organism looks like (photo) Genotype Combination of alleles (genes) Heterozygous Different Ex. Bb Homozygous Same Ex. BB
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For each genotype below, indicate whether it is heterozygous (He) or homozygous (Hm) Ex 1:AA _____ Ex 2: Gg____ 1. Ee ____2. kk____ 3. Ii _____ 4. oo____ 5. Mm _____6. HH____ 7. Bb _____ 8. LL____ 9. ff ____ 10. Pp____ 11. Jj _____ 12. DD ____ 13. nn _____14. Cc _____
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For each of the following genotypes determine what phenotypes would be possible…
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Practice #1: Purple flowers (P) are dominant to white flowers (p). (P=dominant, p=recessive) –PP___________________ –Pp___________________ –pp___________________
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Practice #2: Bobtails in cats are recessive. (T=tails, t=bobtails) –TT _________________ –Tt _________________ –tt________________
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Practice #3: Round seeds are dominant to wrinkled seeds –RR__________________ –Rr__________________ –rr __________________
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Practice #4: Brown eyes are dominant to blue eyes –BB_________________ –Bb________________ –bb________________
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For each of the following phenotypes, list the genotypes (remember to use the letter of the dominant trait)
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Practice #1: Straight hair is dominant to curly. ___ straight ____ curly
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Practice #2: Pointed heads are dominant to round heads. _____ pointed _____ round
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Practice #3 Brown hair is dominant to blonde hair ________ Brown hair _________Blonde hair
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