Punnet Squares Practice - Level 2 Question Preview (ID: 37252)


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In cats, long hair (L) is dominant over short hair (l). If a heterozygous, long haired cat is crossed with a homozygous, short haired cat, what is the probability of one of their offspring having long hair?
a) 100%
b) 25%
c) 50%
d) 75%

In cats, long hair (L) is dominant over short hair (l). If a homozygous, long haired cat is crossed with a homozygous, short haired cat, what is the probability of one of their offspring having short hair?
a) 25%
b) 50%
c) 0%
d) 100%

In cats, long hair (L) is dominant over short hair (l). If a heterozygous, long haired cat is crossed with a homozygous, long haired cat, what is the probability of one of their offspring having long hair?
a) 100
b) 25
c) 75
d) 50

One flower is heterozygous red (Rr) and it is crossed with a homozygous white (rr) plant. Use a Punnet square to determine the probability of one of their offspring having a white color.
a) 25
b) 100
c) 75
d) 50

In a certain species of plant, red flowers (R) are dominant to white flowers (r). You have crossed two red-flowered plants, but you don't know their genotypes. If you get 75% red offspring and 25% white offspring, the parents were...
a) Homozygous red (RR) and Heterozygous red (Rr)
b) Homozygous red (RR) and Homozygous red (RR)
c) Heterozygous red (Rr) and Heterozygous red (Rr)
d) White (rr) and Homozygous red (Rr)

In a certain species of plant, red flowers (R) are dominant to white flowers (r). You have crossed a red flowered plant and a white flowered plant. If you get 100% red offspring and 0% white offspring, the parents were...
a) Rr and rr
b) RR and rr
c) RR and Rr
d) rr and rr

In a certain species of pine trees, short needles (S) are dominant to long needles (s). If you cross a long-needled plant with a heterozygous short-needled plant, what will be the genotype ratios of your offspring?
a) 100% short and 0% long
b) 75% short and 25% long
c) 50% short and 50% long
d) 0% short and 100% long

In a certain species of pine trees, short needles (S) are dominant to long needles (s). If you cross a long-needled plant with a homozygous short-needled plant, what is the probability that your offspring will have long needles?
a) 100%
b) 50%
c) 25%
d) 0%

In guinea pigs, black fur (B) is dominant to white fur (b). If you cross two guinea pigs with heterozygous black fur, what is the probability of getting black offspring?
a) 100
b) 75
c) 50
d) 0

In guinea pigs, black fur (B) is dominant to white fur (b). If you cross two guinea pigs with homozygous white fur, what is the probability of getting black offspring?
a) 100
b) 75
c) 50
d) 0

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