Download Fundamentals of Genetics Review Questions Why is Gregor Mendel

Fundamentals of Genetics Review Questions
1. Why is Gregor Mendel important to genetics?
2. What is the difference between geneotype and phenotype?
3. What is the difference between dominant and recessive?
4. Using the letter A…
a. What is the genotype for a homozygous dominant individual?
b. What is the genotype for a homozygous recessive individual?
c. What is the genotype for a heterozygous individual?
5. In the smiley family, having a round face is a dominant trait and an oval face is recessive. If one parent was
homozygous for a round face and the other parent was homozygous for an oval face what type of face will their
children have?
6. One smiley parent is heterozygous yellow for face color and the other parent is homozygous yellow for face
color. What are the possible outcomes for the face color of their children? (Yellow is a dominant trait and
green is a recessive trait)
7. Bob Smiley is heterozygous for his smile and so is his wife Jane Smiley. What are the chances of their children
having a thick smile? A thin smile? ( A thick smile is dominant and a thin smile is recessive)
8. Smiley face people can have either red of blue eyes. Blue is the dominant trait while red is recessive. If Bob has
red eyes and his wife is heterozygous for blue eyes, what is the chance that their children will have blue eyes?
9. Summarize Mendel’s Law of Segregation.
10. Summarize incomplete dominance.
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Complete the following dihybrid crosses. Give the following information (1) Parental genotypes; (2) Genotypic Ratio; (3)
Phenotypic Ratio.
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In horses, black is dependent upon a dominant gene (B), and chestnut color upon its recessive allele (b).
The trotting gait is due to a dominant allele, (T), the pacing gait to its recessive allele, (t).
11. Cross a homozygous black, homozygous trotting horse with a chestnut, pacing horse.
12. Cross a homozygous black, pacing horse with a chestnut heterozygous trotting horse.