Nonmendelian Genetics

What do you call the physical expression of a gene?

• genotype
• dominant
• phenotype
• allele

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

• 0%
• 25%
• 50%
• 100%

The different forms of a gene are called

• traits
• pollinators
• alleles
• hybrids

A genotype where only recessive alleles

were passed on from both parents for one trait is called:

(examples: bb aa tt ll)

• Heredity

• Homozygous Dominant

• Homozygous Recessive

• Phenotype

A genotype where one dominant and one recessive allele was passed on from both parents for one trait is called:

(examples: Bb Aa Tt Ll)

• Allele

• Homozygous Dominant

• Homozygous Recessive

• Heterozygous

When red snapdragons are crossed with white snapdragons, the offspring produce pink flowers. This is an example of:

• complete dominance

• incomplete dominance

• codominance

• polygenic inheritance

• multiple alleles

When red cows are crossed with white cow, the offspring have a mix of red hair and white hair. These cows are called roan. This is an example of:

• complete dominance

• incomplete dominance

• codominance

• polygenic inheritance

• multiple alleles

The gene for human blood type has three alleles, A, B and O. This is an example of:

• complete dominance

• incomplete dominance

• codominance

• polygenic inheritance

• multiple alleles

This flower is produced by crossing a pink-flowering plant and a white-flowering plant. This is an example of:

• complete dominance

• incomplete dominance

• codominance

• polygenic inheritance

• multiple alleles

If a dark brown horse and a white horse are bred, the offspring are palomino (tan). This is an example of:

• complete dominance

• incomplete dominance

• codominance

• polygenic inheritance

• multiple alleles