Understanding Trait Inheritance

What was the common method of understanding inheritance before modern genetics?

• Scientific experiments

• Observations and guesses

• Computer simulations

• Genetic engineering

What are the two flower positions in pea plants?

• Axial and Terminal

• Top and Bottom

• Left and Right

• Inner and Outer

Which of the following is a homozygous genotype?

• TT

• Tt

• tT

• T

What does the letter 't' represent in the genotype of a pea plant?

• Tall

• Short

• Medium

• Dwarf

What is the genotype ratio in the offspring of a Tt x Tt cross?

• 1 TT: 2 Tt: 1 tt

• 2 TT: 1 Tt: 1 tt

• 1 TT: 1 Tt: 2 tt

• 3 TT: 1 tt

Which of the following is an example of a genotype?

• Tall

• Short

• Tt

• Green

Which generation in the diagram shows a cross between Tt x Tt?

• P Generation

• F1 Generation

• F2 Generation

• F3 Generation

Which of the following genotypes would result in a short phenotype?

• TT

• Tt

• tt

• TTT

In the dihybrid cross RrYy x RrYy, what is the probability of obtaining a yellow-round phenotype?

• 9/16

• 3/16

• 1/16

• 6/16

Which of the following is a possible genotype for a yellow-wrinkled offspring?

• RrYy

• rrYy

• Rryy

• rryy