Genetics ISN Scavenger Hunt
1. Parents pass their traits to their offspring through their
_________________ cells.
2. A recessive trait is only observed when __________ recessive traits
are present in the offspring.
3. What is the study of heredity called?
4. What is the name of the factor that seems to disappear?
5. What is the name of the factor that covers up another factor?
6. A ___________is a part of the DNA code on a chromosome.
7. What does a Punnett square show?
8. A capital letter represents a _______________ trait.
9. tt represents a homozygous _________________ genotype.
10. A heterozygous orange-flowered plant is crossed with a
homozygous purple-flowered plant. If orange is dominant to
purple, what color ratio will the flowers of the offspring have?
11. A man is heterozygous (Cc) for a recessive trait that causes a fatal
illness and the woman is homozygous (CC). What is the probability
of the child inheriting the trait for the disease (cc)?
12. One fish has narrow fins (ww) and the other fish has wide fins.
What genotype must the parent fish have in order for all the
offspring to have wide fins?
13. If Bird A has a genotype (ll) for a short beak and Bird B has a
genotype (LL) for a long beak, what type of beak will the offspring
have?
14. Two blue flowers are crossed. One is homozygous and one is
heterozygous for flower color. If blue is dominant and white is
recessive, what will the ratio of colors be in the offspring?
15. Differentiate between heterozygous and homozygous.
16. Explain the difference between phenotype and genotype.
17. How do you represent a dominant and recessive trait?
18. What is a pedigree?
19. If two people are heterozygous for cystic fibrosis, what are the
chances that their children will have the disease?
20. If you cross a heterozygous yellow pea plant (Yy) with a
homozygous green pea plant (yy), what are the possible genotypes
and phenotypes of the offspring?
Genetics ISN Scavenger Hunt
1. Parents pass their traits to their offspring through their
_________________ cells.
2. A recessive trait is only observed when __________ recessive traits
are present in the offspring.
3. What is the study of heredity called?
4. What is the name of the factor that seems to disappear?
5. What is the name of the factor that covers up another factor?
6. A ___________is a part of the DNA code on a chromosome.
7. What does a Punnett square show?
8. A capital letter represents a _______________ trait.
9. tt represents a homozygous _________________ genotype.
10. A heterozygous orange-flowered plant is crossed with a
homozygous purple-flowered plant. If orange is dominant to
purple, what color ratio will the flowers of the offspring have?
11. A man is heterozygous (Cc) for a recessive trait that causes a fatal
illness and the woman is homozygous (CC). What is the probability
of the child inheriting the trait for the disease (cc)?
12. One fish has narrow fins (ww) and the other fish has wide fins.
What genotype must the parent fish have in order for all the
offspring to have wide fins?
13. If Bird A has a genotype (ll) for a short beak and Bird B has a
genotype (LL) for a long beak, what type of beak will the offspring
have?
14. Two blue flowers are crossed. One is homozygous and one is
heterozygous for flower color. If blue is dominant and white is
recessive, what will the ratio of colors be in the offspring?
15. Differentiate between heterozygous and homozygous.
16. Explain the difference between phenotype and genotype.
17. How do you represent a dominant and recessive trait?
18. What is a pedigree?
19. If two people are heterozygous for cystic fibrosis, what are the
chances that their children will have the disease?
20. If you cross a heterozygous yellow pea plant (Yy) with a
homozygous green pea plant (yy), what are the possible genotypes
and phenotypes of the offspring?