Inheritance Practice Exam
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Use this practice exam to prepare for the unit test. Use a blank sheet of paper to help you with any of the punnett square problems.
- 1.
- A.
BB
- B.
Bb
- C.
BB
- D.
Bb
- 2.
- A.
1
- B.
2
- C.
3
- D.
4
- 3.
- A.
Cells reproduce making identical copies to the parent cell
- B.
Cells reproduce and pass on the genetic traits of one parent
- C.
Parent cells contribute half of a set of chromosomes each, creating a cell that is genetically different than the parent cell
- D.
None of the above
- 4.If dimples are dominant in humans, what are the possible genotypes of a man with dimples?
- A.
Dimples
- B.
Non-dimpled
- C.
BB, bb
- D.
BB, Bb
- 5.
- A.
Two diploid cells genetically identical to their parent cells
- B.
Two haploid cells genetically different from their parent cells
- C.
Four diploid cells genetically identical to their parent cells
- D.
Four haploid cells genetically different from their parent cells
- 6.
- A.
Crossing over does not change the outcome in the offspring
- B.
The chromosomes of the parent cell mutate to form new chromosomes
- C.
The daughter cells to be genetically identical to the parent cells
- D.
New combinations of alleles for a given trait
- 7.Which of the following crosses will produce all homozygous offspring?
- A.
FF x FF
- B.
FF x Ff
- C.
Ff x Ff
- D.
FF x ff
- 8.All of the following are produced by meiosis except
- A.
Egg
- B.
Sperm
- C.
Zygote
- D.
Gamete
- 9.
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Which of the punnet squares above shows the results of a cross between two heterozygous individuals?- A.
1
- B.
2
- C.
3
- D.
4
- 10.The genotypic ratio of a cross between one heterozygous dominant and one homozygous dominant individual is
- A.
1:1
- B.
1:2:1
- C.
3:1
- D.
None of the above
- 11.
- A.
Rr
- B.
Rr
- C.
RR
- D.
RR
- 12.Sharon has 100 rabbits. Sevety-nine of her rabbits are black and twenty-oneof the rabbits are white. Based on this information, what can she conclude about the rabbits?
- A.
The parents of the rabbits were homozygous dominant
- B.
The genotypes of the rabbits were Rr x RR
- C.
One parent was homozygous dominant and one parent was recessive
- D.
The genotypes of the rabbits were Rr x Rr
- 13.Which of the following is used to describe a genotype?
- A.
Brown
- B.
3:1 ratio
- C.
100% recessive
- D.
Both b and c
- 14.Brown eyes are dominant to blue eyes. What would the phenotypes of the offspring be if the cross was Bb x bb?
- A.
100% brown
- B.
75% brown, 25% blue
- C.
50% brown, 50% blue
- D.
25% brown, 75% blue
- 15.
- A.
Brown and green
- B.
100% homozygous brown
- C.
50% heterozygous dominant and 50% recessive
- D.
100% bb
- 16.
- A.
100%
- B.
75%
- C.
50%
- D.
0%
- 17.In metaphase, the chromosomes
- A.
Form
- B.
Line up in the middle of the cell
- C.
Move topward the centrioles
- D.
Condense to form chromatin
- 18.In pea plants, purple flowers are dominant to white flowers. If two white flowered plants are crossed, what percentage of their offspring will be white flowered?
- A.
0%
- B.
50%
- C.
75%
- D.
100%
- 19.
- A.
0%
- B.
25%
- C.
50%
- D.
100%
- 20.Replication of the chromosomes takes place in
- A.
Meiosis I
- B.
Meiosis II
- C.
Mitosis
- D.
Interphase
- 21.A specific characteristic that varies from one individual to another is called a
- 22.The process of reduction division in which the number of chromosomes is cut in half through the separation of homologous chromosomes in a diploid cell is called
- 23.When an organism has two identical alleles for a trait, the organism is said to be
- 24.Different forms of a gene are called
- A.
Hybrids
- B.
Dominant factors
- C.
Recessive factors
- D.
Alleles
- 25.A punnett square is used to determine the
- A.
Probable outcome of a cross
- B.
Actual outcome of a cross
- C.
Result in segregation
- D.
Result of meiosis
- 26.The offspring of crosses between parents with two different traits are called
- A.
Homozygous
- B.
Hybrids
- C.
Dominant
- D.
Recessive
- 27.The chemical factors that determine traits are called
- A.
Traits
- B.
Genes
- C.
Chromosomes
- D.
Alleles
- 28.The separation of alleles during gamete formation is called
- A.
Separation of alleles
- B.
Segregation
- C.
Meiosis
- D.
Mitosis
- 29.The physical expression of a gene is called
- A.
Homozygous
- B.
Heterozygous
- C.
Genotype
- D.
Phenotype
- 30.The genetic expression of the trait is called the
- A.
Homozygous trait
- B.
Heterozygous trait
- C.
Genotype
- D.
Phenotype
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