Beyond Dominant and Recessive Alleles 1

1. In a certain species of animal, black fur (B) is dominant over tan fur (b).  
Which type of dominance does this cross show?

• Complete Dominance
• Incomplete Dominance
• Codominance
• Polygenic Inheritance

Snapdragon flowers come in red, pink, and white. What type of inheritance is this?

• Complete Dominance

• Incomplete Dominance

• Codominance

• Polygenic Inheritance

If a homozygous red snapdragon and a heterozygous pink snapdragon were crossed, what percentage of the offspring would be homozygous white?

• 0%

• 25%

• 50%

• 75%

If a homozygous red snapdragon and a heterozygous pink snapdragon were crossed, what percentage of the offspring would be homozygous red?

• 0%

• 25%

• 50%

• 75%

A cow with roan fur shows both the traits for brown fur and white fur. What kind of allele expression is this?

• Incomplete Dominance

• Codominance

• Independent Assortment

• Recessive Inheritance

A red lily crossed with a yellow lily produces heterozygous orange lily flowers. This is an example of which type of inheritance?

• Codominance
• Incomplete Dominance
• Sex Linked
• Polygenic Trait

A yellow fish, when crossed with a blue fish, produces heterozygous fish with blue AND yellow scales. This is an example of which type of inheritance?

• Sex Linked
• Polygenic
• Codominance
• Incomplete Dominance

If the heterozygous genotype leads to a BLEND of the other two traits, this is an example of ______________.

• Incomplete Dominance
• Codominance
• Multiple Alleles
• Polygenic Inheritance

Phenotypes which result as a combination of MANY genes, such as skin color and eye color, are known as ______________ traits.

• Monogenic
• Dihybrid
• Multiple Allele
• Polygenic

A red flowered plant breeds with a white flowered plant. The gene for petal color in these plants expresses incomplete dominance. What percentage of the offspring will have pink flowers?

• 0%

• 25%

• 50%

• 100%