Punnett squares/Genetics

Which of the following shows a dominant trait?

• aa

• Bb

• cc

• dd

The only way for a recessive trait to appear is for an organism to have

• two dominant alleles

• two recessive alleles

• one dominant allele and one recessive allele

Which of the following is considered to be Homozygous Dominant?

• AA

• Aa

• aa

Which of the following is considered to be Heterozygous?

• AA

• aa

• Aa

The combination of genes a person has, represented by letters, is their...

• Genotype

• Phenotype

• Chromosome

• Punnett Square

The physical (observable) traits a person has is their...

• Genotype

• Phenotype

• Chromosome

• Punnett Square

When completing a Punnett Square, where are the genotypes of the parents?

• In the boxes

• On the top and side

• Nowhere

If a person has the genotype, Yy, which trait do we see? (Y=Yellow, y=blue).

• Yellow, since it is the dominant trait

• Blue, since it is the recessive trait

• Both

If the dominant trait is having freckles (F) and the recessive trait is no freckles (f), which allele combination(s) below would represent a person who has freckles? (select all that apply)

• FF

• Ff

• ff

Look at the punnett square. What is the probability that the offspring would have homozygous alleles for the trait?

• 100%

• 75%

• 50%

• 25%

• 0%