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- 1. Multiple ChoiceWhat is a phenotype?The expression of a trait; physical appearance.refers to the genetic makeup of an individualAn organism that has the same genes for a trait (ex. TT or tt)the passing of traits from parent to offspring
- 2. Multiple ChoiceWhat does heterozygous mean?An organism that has the same genes for a trait (TT or tt)An organism that has different genes for a trait (Tt)When neither gene is fully dominant; offspring is a mixture of boththe different forms of a trait (hair color--> brown, blonde, red
- 3. Multiple ChoiceAn allele whose trait only shows up when no dominant allele is present.hidden alleledominant allelerecessive allelepresent allele
- 4. Multiple ChoiceTwo heterozygous (Tt)tall pea plants are crossed. Which describes their offspring?50% tall and 50% short75%tall and 25% short100%short
- 5. Multiple ChoiceR=round seed
r=wrinkled seed.
Cross a homozygous round with a wrinkled. Which statement predicts the results?offspring will be Rroffspring will be RRround seeds will be recessive to wrinkledWrinkled will be observed in half of offspring - 6. Multiple ChoicePea plants can have green or yellow seeds. In a pea plant that is heterozygous for seed color, the allele for yellow seeds masks the effects of the allele of green seeds. Which of the following terms best describes the allele for yellow seeds?codominantrecessivedominantsex-linked
- 7. Multiple ChoiceA human usually has _____ total chromosomes.622446
- 8. Multiple ChoiceWhich of the following alleles is homozygous recessive?TtttTTT
- 9. Multiple Choice
This type of inheritance pattern is a MIXTURE of both traits.incomplete dominanceco-dominancecomplete dominancerecessive pattern - 10. Multiple ChoiceColorblindness is a recessive, X chromosome sex-link disorder. Cross the parents to figure out which percentage of their offspring will be colorblind.25%0%75%50%
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