Genetics and Punnett Square Assessment

SpongeBob's aunt and uncle, SpongeBrooke and SpongeJason, have the biggest round eyes in the family. SpongeBrooke is believed to be heterozygous for her round eye shape, while SpongeJason's family brags that they are pure line.

• RR and Rr

• RR and RR

• RR and rr

• Rr and rr

SpongeBob's aunt and uncle, SpongeBrooke and SpongeJason, have the biggest round eyes in the family. SpongeBrooke is believed to be heterozygous for her round eye shape, while SpongeJason's family brags that they are pure line.

What is the probability that SpongeBrooke and SpongeJason's offspring would have round eyes?

• 0 %

• 50 %

• 100 %

• 75 %

Tags

NGSS.MS-LS4-4

SpongeBob's aunt and uncle, SpongeBrooke and SpongeJason, have the biggest round eyes in the family. SpongeBrooke is believed to be heterozygous for her round eye shape, while SpongeJason's family brags that they are pure line.

What is the probability that SpongeBrooke and SpongeJason's offspring would have oval eyes?

• 100 %

• 75 %

• 50 %

• 0 %

Tags

NGSS.MS-LS3-2

In a group of cucumber plants, some individuals have dull fruit and others have glossy (shiny) fruit.

What is the probability that offspring produced by two heterozygous cucumber plants will be homozygous recessive for the fruit sheen gene?

• 0 %

• 25 %

• 75 %

• 100 %

In a group of dachshund dogs, some individuals have rough fur and others have soft fur. The allele for soft fur is recessive to the allele for rough fur.

Make the following cross. If two homozygous dominant dachshund are crossed what is the probability that a dachshund dog produced by this cross will have soft fur?

• 0%

• 25%

• 75%

• 100%

Make the following cross. A heterozygous long-tusked elephant is crossed with a homozygous recessive short-tusked elephant. What is the probability of the offspring having short tusks?

• 50%

• 25%

• 75%

• 100%

Make the following cross. A heterozygous round seeded plant is crossed with a homozygous round seeded plant. What percentage of the offspring will be homozygous dominant?

• 0%

• 25%

• 50%

• 100%

Make the following cross. A heterozygous tall pea plant with a homozygous recessive pea plant. What would the phenotypical ratios of tall to short plants be?

• 4:short

• 4:tall

• 3:tall, 1:short

• 2:tall 2:short

Noah crosses a plant producing wrinkled peas with a plant producing smooth peas. Weeks later, he discovers that all the offspring plants have smooth peas. Noah drew a Punnett square to show the genotypes of the offspring plants. What were the genotypes of the parents?

• Rr and rr

• Rr and Rr

• Rr and Rr

• RR and rr

John crosses a plant producing wrinkled peas with a plant producing smooth peas. Weeks later, he discovers that all the offspring plants have smooth peas. Which is the dominant phenotype in the pea plants used in John’s experiment?

• wrinkled

• RR

• smooth

• Rr