Science: Solving Punnett Squares and
Problems Exam Questions and Answers
If purple flowers are dominant over white flowers in pea plants, what would the possible
genotypes of the offspring of a purple homozygous dominant plant and a heterozygous
pea? - Correct Answers -PP, Pp.
If purple flowers are dominant over white flowers in pea plants, what would the possible
phenotypes of the offspring of a purple homozygous dominant plant and a heterozygous
pea? - Correct Answers -100% would be purple
In unicorns, sapphire eyes are dominant over emerald eyes. What could be the
genotypes of 2 heterozygous unicorns' offspring? - Correct Answers -SS, ss, Ss
Homozygous - Correct Answers -having two identical alleles for a trait, TT or tt
Heterozygous - Correct Answers -having two different alleles for a trait, Tt
When you make a punnet square, do you take the letter from the top or from the side
first? - Correct Answers -From the top
Are punnet squares and predictions always accurate in the end? - Correct Answers -Not
all of the time because chance plays a large role in genetics. But, punnet squares offer
a good prediction of possible results.
In unicorns, sapphire eyes are dominant over emerald eyes. What could be the
phenotypes of 2 heterozygous unicorns' offspring? - Correct Answers -25% homo
dominant, 50% heterozygous, 25% homo recessive
monohybrid cross - Correct Answers -a punnett square in which you cross 2 things to
see possible genetic outcomes of their children
In pea plants, yellow seeds are dominant over green seeds. Cross 2 heterozygous
plants. What percent are yellow? What percent is green? - Correct Answers -75% are
yellow, 25% dominant
In pea plants, yellow seeds are dominant over green seeds. Cross 2 heterozygous
plants. What are the genotypes of their offspring? - Correct Answers -2 are
Problems Exam Questions and Answers
If purple flowers are dominant over white flowers in pea plants, what would the possible
genotypes of the offspring of a purple homozygous dominant plant and a heterozygous
pea? - Correct Answers -PP, Pp.
If purple flowers are dominant over white flowers in pea plants, what would the possible
phenotypes of the offspring of a purple homozygous dominant plant and a heterozygous
pea? - Correct Answers -100% would be purple
In unicorns, sapphire eyes are dominant over emerald eyes. What could be the
genotypes of 2 heterozygous unicorns' offspring? - Correct Answers -SS, ss, Ss
Homozygous - Correct Answers -having two identical alleles for a trait, TT or tt
Heterozygous - Correct Answers -having two different alleles for a trait, Tt
When you make a punnet square, do you take the letter from the top or from the side
first? - Correct Answers -From the top
Are punnet squares and predictions always accurate in the end? - Correct Answers -Not
all of the time because chance plays a large role in genetics. But, punnet squares offer
a good prediction of possible results.
In unicorns, sapphire eyes are dominant over emerald eyes. What could be the
phenotypes of 2 heterozygous unicorns' offspring? - Correct Answers -25% homo
dominant, 50% heterozygous, 25% homo recessive
monohybrid cross - Correct Answers -a punnett square in which you cross 2 things to
see possible genetic outcomes of their children
In pea plants, yellow seeds are dominant over green seeds. Cross 2 heterozygous
plants. What percent are yellow? What percent is green? - Correct Answers -75% are
yellow, 25% dominant
In pea plants, yellow seeds are dominant over green seeds. Cross 2 heterozygous
plants. What are the genotypes of their offspring? - Correct Answers -2 are
