Mendelian Genetics Using Punnett Squares Quiz

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An organism with the GG genotype would be -

• homozygous dominant
• homozygous recessive
• heterozygous dominant
• heterozygous recessive

An organism with the gg genotype would be -

• homozygous dominant
• homozygous recessive
• heterozygous dominant
• heterozygous recessive

The scientist who closely observed pea plants and is credited with being the father of genetics is --

• Albert Einstein
• Charles Darwin
• Fancis Crick
• Gregor Mendel

A round seed pea plant (Rr) is crossed with a wrinkled pea plant (rr). Solve the cross using a Punnett Square. Then select the correct answer below for genotypes.

• 4 RR, 0 rr
• 3 Rr, 1 rr
• 2 Rr, 2 rr
• 1 RR, 3 rr

In the example above, what percentage of the offspring would be round and what percentage would be wrinkled?

• 100% round, 0% wrinkled
• 75% round, 25% wrinkled
• 50% round, 50% wrinkled
• 25% round, 75% wrinkled

A tall pea plant (TT) is crossed with a short pea plant (tt). Solve the cross using a Punnett Square. Then select the correct answer below for genotypes.

• 4 TT, 0 tt
• 4 Tt, 0 tt
• 2 Tt, 2 tt
• 1 Tt, 3 tt

In the example above, what phenotypes are likely to be observed?

• 100% tall, 0% short
• 75% tall, 25% short
• 50% tall, 50% short
• 25% tall, 75% short

In guinea pigs, the short hair trait is dominant. If two heterozygous guinea pigs were crossed, what would be the phenotypes of the offspring?

• 100% short hair
• 75% short hair, 25% long hair
• 50% short hair, 50% long hair
• 25% short hair, 75% long hair

In humans, the ability to curl your tongue is a dominant trait. Complete a Punnett Square for a heterozygous father with a homozygous dominant mother. What percentages of the offspring would be able to curl their tongues?

• 100%
• 75%
• 50%
• 25%