Medical Quiz

ADVBIO Genetics Quiz


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A complex inheritance pattern that occurs when neither allele is dominant and both alleles are expressed

A. simple dominance

B. sex-linked trait

C. co-dominance

D. incomplete dominance


What percentage of the offspring will have recessive homozygous genotypes?

A. 0%

B. 25%

C. 50%

D. 100%


Dominant alleles are represented by a:

A. Male gene

B. lowercase letter

C. recessive trait

D. capital letter


KEY:

Type A= AA or AO

Type B = BB or BO

Type AB = AB

Type O = OO

If a father is AA and a mother is AB, what is the probability for a child with AB blood?

A. 0%

B. 25%

C. 50%

D. 75%


Which is the correct phenotypic % for the following Punnett square if T=tall and t=short

A. 100% tall

B. 100% short

C. 50% tall, 50% short

D. 75% tall, 25% short


Cross two homozygous plants

(RRYY x rryy)

R = round seeds, r = wrinkled seeds Y = yellow seeds, y = green seeds

What percent will have Round and Yellow seeds?

A. 0%

B. 25%

C. 50%

D. 100%


A white mouse with red eyes is crossed with a black mouse with brown eyes. The white mouse is recessive for both of its traits. The black mouse is dominant for both of its traits.

This cross would be
_
A. BBEE x bbee

B. BBEe x BbEe

C. BbEE x BbEe

D. BBee x BBEE


If there is a cross of a red and white chicken, and the trait is co-dominant, what will be the result?

A. a pink chicken

B. a red and white chicken

C. a red chicken

D. a white chicken


Colorblindness is a sex-linked recessive disorder. If the daughter of a couple is colorblind, what are the two possible genotypes of her mother?

a. XAXA and XAXa

b. XAXA and XaXa

c. XAXa and XaXa

d. Cannot be determined


organism heterozygous for a specific trait

A. recessive

B. purebred

C. hybrid

D. dominant


What percentage will be tall offspring if B=tall and b=short?

A. 0%

B. 25%

C. 50%

D. 100%


organism homozygous for a specific trait

A. recessive

B. purebred

C. hybrid

D. dominant


Two alleles are different

A. homozygous

B. heterozygous

C. co-dominant

D. dihybrid


Different forms of a gene are called

A. alleles

B. traits

C. genotypes

D. chromosomes


What percentage will have homozygous dominant genotypes?

A. 0%

B. 25%

C. 75%

D. 100%


In pea plants, the tall allele is dominant to the short allele. What key would demonstrate this?

a. Tall = T
Short = S

b. Tall = T
Short = t

c. Tall = t
Short = T

d. Tall = TT
Short = tt


If their offspring is pink, and the parents are red and white, which pattern of inheritance does this represent?

A. sex-linked inheritance

B. simple dominance

C. co-dominance

D. incomplete dominance


Two alleles are the same

A. homozygous

B. heterozygous

C. co-dominant

D. dihybrid


This is a pedigree that follows blue eyes which is a recessive trait. What are the genotypes of II-1 and II-2?

A. Aa, AA

B. aa, aa

C. AA, AA

D. Aa, Aa


What you see, or the physical appearance.

A. Genotype

B. Phenotype

C. Homozygous

D. Heterozygous


What percentage will have heterozygous genotypes?

A. 0%

B. 25%

C. 50%

D. 100%


A homozygous individual would have a genotype of

A. gray

B. RW

C. AA

D. Aa


Which factor can affect the epigenome?

A. nutrition

B. exercise

C. stress

D. all of these factors can affect the epigenome


Which describes why the twins shown are not exactly alike?

A. Mutations occured to change traits

B. Epigenetic changes were caused by environmental factors

C. The twins have different DNA

D. The twins are identical.


Normal humans have 46 chromosomes in their somatic cells. How many chromosomes do the gametes have?

A. 46

B. 23

C. 12

D. 92




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