Medical Quiz

Inheritance Quiz


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An offspring that receives 2 dominant alleles or 2 recessive alleles from its parents.

A. Homozygous

B. Heterozygous

C. Dominant

D. Recessive


What is the genotype of a person with type A blood, who had a father with type O blood?

A. AB

B. AO

C. AA

D. OO


What type of RNA carries the DNA message out of the nucleus to the ribosomes?

A. mRNA

B. tRNA

C. rRNA

D. DNA


How much of your DNA do you inherit from your mom?
A. 10%
B. 25%
C. 50%
D. it varies


One form of a gene is called_______________
A. a DNA
B. a Phenotype
C. a trait
D. an allele


A ______________ is a person who has one normal or dominant allele for a trait and a recessive or abnormal allele for a trait.
A. codominant
B. disorder
C. carrier
D. pedigree


During meiosis, the nucleus of the parent cell divides
A. once
B. twice
C. three times
D. four times


The shape of a DNA molecule is a

A. rope

B. double helix

C. curve

D. circular


If an offspring receives an allele of genetic information for two different forms of a trait from its parents, which trait will it express?

A. It will share or blend the traits

B. Whichever trait is recessive

C. Whichever trait is dominant

D. There is a 50/50 chance of having either trait


Meiosis results in the production of

A. 2 diploid cells

B. 2 haploid cells

C. 4 haploid cells

D. 4 diploid cells


In pea plants, white flower color is recessive. In order to inherit white flower color, a pea plant must receive
A. at least one allele for white flower color from one parent.
B. at least one allele for purple flower color from one parent.
C. an allele for white flower color from each parent.
D. two dominant alleles.


In dogs, the allele for black fur (B) is dominant over the allele for white fur (b). A breeder breeds a heterozygous dog with a recessive homozygous dog. If the female dog has a litter of 12 puppies, predict how many will have black fur.

A. 12

B. 3

C. 6

D. 4


How many phenotypes are there in ABO blood types?
A. 3
B. 4
C. 6
D. 12


What are the 4 letters that represent the DNA bases?

A. Q R U L

B. Y U O P

C. Z Q R W

D. C G A T


An allele which is only expressed when no dominant allele is present.

A. hidden allele

B. dominant allele

C. recessive allele

D. present allele


Why do we need meiosis?
A. To double the number of chromosomes going into sex cells
B. To halve the number of chromosomes going into sex cells
C. To triple the number of chromosomes going into sex cells
D. To not change the number of chromosomes going into sex cells


A recessive allele on the X chromosome will always produce the trait in a male.
A. TRUE
B. FALSE


Sex-linked genes are mostly found on which chromosome?
A. XX
B. XY
C. Y only
D. X only


What gender of offspring are most often affected by sex-linked inheritance? What gender are usually carriers of the trait?
A. males, males
B. females, males
C. males, females
D. females, females


What happens when a true-breeding plant self-pollinates?

A. Some of its offspring have the same traits as the parent.

B. None of its offspring have the same traits as the parent.

C. All of its offspring have the same traits as the parent.

D. One of its offspring has the same traits as the parent.


How many chromosomes do humans have?

A. 3

B. 10

C. 28

D. 46


In cats, the allele for stripes (S) is dominant over the allele for no stripes (s). Two heterozygous cats are bred. If the female cat has a litter of 8, predict how many kittens will have no stripes.

A. 2

B. 6

C. 4

D. 8


If a somatic (body) cell in a butterfly contains 24 chromosomes, a butterfly egg would contain
A. 3
B. 6
C. 12
D. 24


A man with type AB blood is accused of being the father of a type O baby. The mother is type A. Could this man be the father?

A. Yes

B. No


What is the relationship between a protein, the cell, and DNA?

A. DNA is produced by protein which is produced in the cell

B. Protein is composed of DNA which is produced in the cell

C. DNA, found within the cell, codes for a specific protein

D. A cell is composed of DNA and protein




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