Genetics and Punnett Squares

In second-generation crosses, how many purple flowers are produced?

• 1

• 2

• 3

• 4

What is the recessive color in Mendel's second-generation crosses?

• Purple

• White

• Yellow

• Red

What does a true-breeding plant mean?

• It can only produce one type of flower

• It can produce multiple types of flowers

• It cannot reproduce

• It is genetically identical to its parent

What is the purpose of Mendel's experiments with plants?

• To study plant growth

• To understand inheritance of traits

• To create new plant species

• To measure plant height

What is a recessive trait?

• A genetic factor that blocks another genetic factor

• A trait that always appears in the first generation

• A genetic factor that is blocked by a dominant factor

• A trait that is always dominant

What is a genotype?

• The physical appearance of a trait

• The genetic makeup of an organism

• A type of dominant trait

• A type of recessive trait

What is an example of a heterozygous genotype?

• Rr

• rr

• RR

• R

What does the uppercase letter in a genotype represent?

• Recessive allele

• Dominant allele

• No allele

• Both alleles

What does a Punnett Square predict?

• Weather patterns

• Possible genotypes and phenotypes of offspring

• Economic trends

• Historical events

In a Punnett Square, what does 'TT' represent?

• Homozygous recessive

• Heterozygous

• Homozygous dominant

• Codominant