Genetics Review GBSP24FAC

The two different forms of a gene are called

• zygotes
• traits
• alleles

If T= tall and t= short, then what would be the height of a plant with the genotype Tt?

• Tall
• Short

Phenotype refers to the ______________________ of an individual.

• genetic make up
• physical appearance

Tall is dominant (T) to short (t) in pea plants. Which of the following would be the genotype for a homozygous dominant tall plant?

• Tt
• TT
• tt

Tall is dominant (T) to short (t) in pea plants. Which of the following would be the genotype for a heterozygous plant?

• Tt
• TT
• tt

Of the following, which represents a homozygous recessive genotype?

• Tt
• tt

Yellow seeds (Y) are dominant to green seeds (y). If a heterozygous yellow plant is crossed with a greed plant, what is the chance of having offspring with green seeds?

• 0%
• 25%
• 50%

Yellow seeds (Y) are dominant to green seeds (y). If a heterozygous yellow plant is crossed with a greed plant, what is the chance of having offspring with a homozygous dominant genotype?

• 0%
• 25%
• 50%

Rounds seeds (R) are dominant to wrinkled seeds (r). What is the genotype for wrinkled-seeded offspring?

• RR
• Rr
• rr

In the cross below, what is the chance of the offspring having a heterozygous genotype?

• 0%
• 25%
• 50%