Punnett Squares Quiz Question Preview (ID: 46091)


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How many alleles control a Mendelian trait, such as pea seed color?
a) 2
b) 1
c) 3
d) 4

A plant species has two alleles for flower color: Red (R) and White (r). The Red (R) allele exhibits complete dominance. If a heterozygous red flower and a white flower are crossed, what is the chance that they will have a white flowered offspring?
a) 0%
b) 25%
c) 50%
d) 75%

A plant species has two alleles for flower color: Red (R) and White (r). The Red (R) allele exhibits complete dominance. If a purebred red flower is crossed with a white flower, what is the chance that the offspring will be red?
a) 0%
b) 50%
c) 75%
d) 100%

A plant species has two alleles for leaf shape: Curly (C) and flat (c). The Curly (C) allele exhibits complete dominance. If a heterozygous curly plant is crossed with a homozygous curly plant, what percentage of their offspring will be homozygous?
a) 0%
b) 25%
c) 50%
d) 75%

Black fur(B) in guinea pigs is dominant over white fur(b). Find the probability of a hybrid offspring in the cross: BB x Bb.
a) 0%
b) 25%
c) 50%
d) 75%

Black fur(B) in guinea pigs is dominant over white fur(b). Find the probability of a homozygous offspring in a cross: BB x BB.
a) 25%
b) 50%
c) 75%
d) 100%

Black fur(B) in guinea pigs is dominant over white fur(b). Find the probability of a black offspring in a cross: bb x bb.
a) 0%
b) 25%
c) 50%
d) 75%

Black fur(B) in guinea pigs is dominant over white fur(b). Find the probability of a white offspring in a cross between two heterozygous guinea pigs.
a) 0%
b) 25%
c) 75%
d) 100%

Black fur(B) in guinea pigs is dominant over white fur(b). Find the probability of an offspring with the same phenotype as its parents in a cross between a homozygous black and a heterozygous black guinea pig.
a) 0%
b) 50%
c) 75%
d) 100%

What is the difference between genotype and phenotype?
a) A phenotype is HOW the traits are inherited from the parents and a genotype is the versions of the traits inherited (alleles)
b) A phenotype is the alleles involved (EE, Ee, or ee) and the genotype is how the trait appears or is expressed
c) A phenotype is how the traits are expressed or appear and the genotype is the alleles involved (EE, Ee, or ee)
d) A phenotype is one parent's traits and the genotype is both parents' traits together.

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