Genetics Review Question Preview (ID: 55118)
Basic Genetics Concepts.
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In guinea pigs, short hair is dominant over long hair. If a short haired SS guinea pig is crossed with a long haired ss guinea pig, what is the probability the offspring will have long hair?
a) 0%
b) 25%
c) 50%
d) 100%
Which genotype is homozygous dominant?
a) bb
b) BB
c) Bb
d) bB
Which of the following is a genotype?
a) heterozygous
b) 25%
c) Red Hair
d) Aa
Which of the following is a phenotype?
a) BB
b) Brown Hair
c) Bb
d) genotype
Tongue-curling in humans is a dominant genetic trait. Suppose a man who is Tt for tongue-curling marries a woman who is also Tt for this trait. What is the probability their children CAN roll their tongues??
a) 50%
b) 75%
c) 100%
d) 0%
The genotype Bb can be described as ______.
a) heterozygous
b) homozygous
c) purebred
d) chromosome
What is a segment of DNA that codes for a specific trait?
a) chromosome
b) DNA
c) gene
d) Phenotype
The physical expression of a gene is _______. (also what you see)
a) genotype
b) DNA
c) trait
d) phenotyope
Blindness is a dominant trait is mice. If two homozygous recessive mice have babies, what is the percent the babies will be blind?
a) 100%
b) 75%
c) 25%
d) 0%
What is it called when DNA is manipulated, changed, deleted, or changed in any way to help improve the characteristics of an organism?
a) Trait manipulation
b) Genetic engineering
c) Selective Breeding
d) Bio medical research
According to the rules of Codominance- what color would the offspring of a red flower and white flower be?
a) red
b) white
c) red and white
d) pink
According to the rules of Incomplete Dominance- what color would the offspring of a red flower and white flower be?
a) red
b) white
c) red and white
d) pink
A homozygous dominant tall parent and a short parent have a baby? What is most likely that babies phenotype?
a) tall
b) short
c) TT
d) Tt
How many total chromosomes do humans inherit from their parents?
a) 23
b) 46
c) 92
d) 10,000
A monster does not have horns (hh). This monster really wants a baby with horns. What would the genotype of the other parent have to be to ensure the baby has a 100% chance of having horns?
a) HH
b) Hh
c) hh
d) this is impossible
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