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Genetics Quiz. Biology I –Pilgrim 5/30/13. When we say that “ Tt ” causes tall plants, “ Tt ” represents a : Phenotype b) genotype c) karyotype d) pedigree 2 . One of 2 alternate forms of a single gene is called a(n) \_\_\_\_\_\_\_\_\_\_\_\_\_\_\_?

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genetics quiz

Genetics Quiz

Biology I –Pilgrim

5/30/13

slide2
When we say that “Tt” causes tall plants, “Tt” represents a:
    • Phenotype b) genotype

c) karyotype d) pedigree

2. One of 2 alternate forms of a single gene is called a(n) _______________?

3. Using the allele key “B= large beak, b=smaller beak” describe the following:

  • A homozygous dominant genotype
  • A purebred recessive genotype
  • Give the phenotype of a hybrid
slide3
4. The genotype Aa can be described as _______?

5. A _____ allele is one whose trait always shows up in the organism when the allele is present.

6. The genotype PpLLAaNnTT:

  • Has how many genes in it____?
  • Is diploid or haploid?
slide4
7. Write the 4 steps to completing Punnett Squares.

8. In Newts Rough skin (R) is dominant to smooth skin (r). If Tyrone the smooth skinned newts has offspring with Nanda, a newt who carries the recessive allele but is rough-skinned. What are the chances of homozygous offspring? (Show all work)

9. EC: What 2 processes of sexual reproduction are demonstrated inside and outside punnett squares?

10. EC: For the wildflower genotype PpLLAAnnTT, find the possible gametes.

slide5
Key
  • A 2) allele 3A) BB 3B)bb 3C) Large

4. Hybrid or heterozygous 5. Dominant

6A. 5 genes 6B. Diploid

7. Create allele key, find parent genotypes, meiosis, fertilization

8. 50% chance 9. Meiosis and Fertilization

10. PLAnT, or pLAnT

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