Inheritance Practice Exam: Quiz!

30 Questions | By Mbromell | Last updated: Mar 22, 2022 | Total Attempts: 5239

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1.

In humans, brown eyes (B) are dominant over blue (b). A brown-eyed man marries a blue-eyed woman and they have three children, two of whom are brown-eyed and one of whom is blue-eyed. What must the genotype of the man be?
- A.
  
  BB
- B.
  
  Bb
- C.
  
  BB
- D.
  
  Bb
2.

How many divisions are there in meiosis?
- A.
  
  1
- B.
  
  2
- C.
  
  3
- D.
  
  4
3.

Which of the following statements best describes sexual reproduction?
- 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.

What is the end result of meiosis?
- 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.

Crossing over results in which of the following?
- 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.

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 plant breeder wants to create flowers with all red petals. The genotype of the flower that she has is Rr. Which of the following genotypes should she use to make sure that all the petals of the offspring are red.
- 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.

In a certain species of animal, brown eyes (B) are dominant over green eyes (b). Predict the genotypes of the offspring whose parents are heterozygous brown and green.
- A.
  
  Brown and green
- B.
  
  100% homozygous brown
- C.
  
  50% heterozygous dominant and 50% recessive
- D.
  
  100% bb
16.

In a cross between a heterozygous dominant parent with brown fur and a recessive parent with white fur, how many of the offspring will be homozygous dominant for brown fur?
- 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 heterozygous round seed plant is crossed with a heterozygous round seed plant. What percentage of the offspring will be homozygous?
- 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