ADVBIO Genetics Quiz
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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
What percentage of the offspring will have recessive homozygous genotypes?
A. 0%
B. 25%
C. 50%
D. 100%
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
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%
parent 1: GgBB
Find the gametes for parent 1 for a dihybrid cross.
_
A. GB, GB, gB, gB
B. gB, gb, gB, gb
C. Gg, BB, GB, GB
D. gg, Bb, gB, gb
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%
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
Two alleles are different
A. homozygous
B. heterozygous
C. co-dominant
D. dihybrid
KEY:
Type A= AA or AO
Type B = BB or BO
Type AB = AB
Type O = OO
If two parents have type AB blood, what is the probability that their child will have type O blood?
A. 0%
B. 25%
C. 50%
D. 100%
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.
Different forms of a gene are called
A. alleles
B. traits
C. genotypes
D. chromosomes
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
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 will have homozygous dominant genotypes?
A. 0%
B. 25%
C. 75%
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
A dihybrid cross involves how many traits?
A. 1
B. 2
C. 3
D. 4
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
Two alleles are the same
A. homozygous
B. heterozygous
C. co-dominant
D. dihybrid
What percentage will be tall offspring if B=tall and b=short?
A. 0%
B. 25%
C. 50%
D. 100%
A heterozygous individual would have a genotype of
A. AA
B. Aa
C. XhXh
D. AABB
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
Normal humans have 46 chromosomes in their somatic cells. How many chromosomes do the gametes have?
A. 46
B. 23
C. 12
D. 92
What percentage will have heterozygous genotypes?
A. 0%
B. 25%
C. 50%
D. 100%
A characteristic, such as red-green color blindness, controlled by genes usually on the X chromosome
A. simple dominance
B. sex-linked trait
C. co-dominance
D. incomplete dominance
This is a pedigree that follows blue eyes which is a recessive trait. What is the genotype of the father in generation 1?
A. Aa
B. AA
C. aa
D. A?- cannot determine
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