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- 1. Multiple Choice
Alternate forms of a gene are called
Chromosomes
Alleles
Gametes
Heterozygotes
- 2. Multiple Choice
Only one ________ allele is needed in order for that trait to be expressed in the phenotype.
Recessive
Dominant
Heterozygous
Homozygous
- 3. Multiple Choice
Which of the following genotypes is homozygous recessive?
RR
Rr
rr
- 4. Multiple Choice
The genotype TT is
Homozygous recessive
Homozygous dominant
Heterozygous
- 5. Multiple Choice
Which of the following genotypes is heterozygous?
BB
Bb
bb
- 6. Multiple Choice
Brown eyes (B) are dominant over blue eyes (b). Mr. Mallin has blue eyes. What is his genotype?
BB
Bb
bb
- 7. Multiple Choice
Brown eyes (B) are dominant over blue eyes (b). Channing Tatum has brown eyes. What is his genotype?
BB
Bb
bb
BB or Bb
- 8. Multiple Choice
Brown eyes (B) are dominant over blue eyes (b). Assume Mr. Ward is homozygous dominant for brown eyes. What is his son’s phenotype?
Brown eyes
Blue eyes
Bb
BB
- 9. Multiple Choice
Free earlobes (E) are dominant over attached earlobes (e). Ms. Palmeri’s phenotype is free earlobes and her genotype is heterozygous (Ee). Which of these statements is true?
Both of her parents have attached ear lobes
At least one of her parents has free earlobes
Both of her parents are homozygous recessive
- 10. Multiple Choice
If a persons genotype is EE, what percentage of their gametes (produced by meiosis) would contain the recessive allele?
100%
50%
25%
0%
- 11. Multiple Choice
The previous question is a direct application of which of Mendel’s laws?
Law of Independent Assortment
Law of Homozygous Dominance
Law of Segregation
Principle of Dominance
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