NAME_____________________________________DATE___________PERIOD________
UNIT 3 –GENETICS QUEST- QUESTIONS
DNA - pages 61-62, 97-98
1. What is the shape of DNA?
2. What are the three parts of DNA and where is each of these parts located?
3. What bases pair together?
4. What is the definition of a gene?
5. What happens during replication?
MENDEL’S WORK – pages 76-81
6. What did Mendel discover by experimenting with pea plants?
7. What is the definition of each of the following terms?
a. heredity –
b. genetics *Question 7 continues on next page*
c. gene -
d. allele -
e. dominant allele -
f. recessive allele -
8. What symbols are used to represent alleles?
PROBABILITY AND HEREDITY – pages 86-88
9. What is the definition of each of the following terms?
a. probability -
b. Punnett square –
c. phenotype –
d. genotype –
e. homozygous –
f. heterozygous –
g. incomplete dominance (not in book) –
10. What are the steps to complete a Punnett square?
11. How do you determine the genotype ratio of a Punnett square?
12. How do you determine the phenotype ratio of a Punnett square?
13. The allele for black fur (B) is dominant over the allele for white fur (b) in guinea
pigs. Show the Punnett square for the cross between a heterozygous black guinea
pig and a white guinea pig. Give the genotype and phenotype ratios.
Genotype Ratios: _______________________
Phenotype Ratios: _______________________
BIOTECHNOLOGY – pages 102-103, 117-118, 123-128, 130-131
14. What is the definition of each of the following terms?
a. biotechnology – the process of using living things as tools to meet our wants
and needs.
b. mutation –
c. genetic disorder (also give two examples) -
d. selective breeding –
e. inbreeding –
f. hybridization –
g. cloning –
*Question 14 continues on next page*
h. genetic engineering –
i. gene splicing (not in book) –
j. gene therapy –
k. DNA fingerprinting –
l. genetically modified food (not in book) –
m. bioremediation (not in book) –
15. How do you analyze DNA fingerprints to determine which children belong to
parents?
16. Is Male 1 or Male 2 the father of the child in the DNA Fingerprint? Explain your
answer.