Review: Incomplete, codomiance and punnet squares

Polygenic Trait

an inheritance pattern in which the trait is controlled by many (poly) genes

Ex. Skin color - many genes control it!

Multiple Choice

The blending of two traits is known as ---

• incomplete dominance

• codominance

Multiple Choice

A condition in which both alleles for a gene are expressed so that both traits are visible is known as ---

• Codominance

• Incomplete dominance

Multiple Choice

What type of inheritance pattern is shown here?

• Codominance

• Incomplete dominance

Multiple Choice

A calico cat shows both the traits for orange fur and black fur. What kind of allele expression is this?

• Incomplete dominance

• Codominance

Multiple Choice

This is an example of ---

• Incomplete dominance

• Codominance

Multiple Choice

Which of the following genotypes is homozygous dominant?

• A

• Aa

• AA

• aa

Multiple Choice

What goes in box 3

• Aabb

• AABB

• AAbb

• aaBb

Multiple Choice

This type of inheritance pattern is a MIXTURE of both traits, like the old theory of blending

• incomplete dominance

• co-dominance

• complete dominance

• recessive pattern

Match

Match the following combinations of alleles:

• Homozygous dominant

• Homozygous recessive

• Heterozygous

DD

dd

Dd

• DD

• dd

• Dd

Multiple Choice

What is the genotype that should be in the blank square?

• yyRr

• YYRR

• yyrr

• YrYr

Multiple Choice

What is the genotype for a pea plant heterozygous for round seeds (R), and homozygous recessive for green seeds (y)?

• Ry

• RRyy

• RrYy

• Rryy