Incomplete dominance

What is incomplete dominance?

A genetic scenario where neither allele completely dominates the other, resulting in a blend of traits.

Example of incomplete dominance?

Red and white flowers produce pink flowers in the offspring, showing a mix of traits.

True or false: Incomplete dominance leads to three distinct phenotypes.

True, because there are the two homozygous forms and one heterozygous form.

Difference between incomplete dominance and complete dominance.

In complete dominance, one allele completely masks the other, while in incomplete dominance, traits blend.

Fill in the blank: In incomplete dominance, the phenotype of the _______ is intermediate.

heterozygote

What is a key feature of incomplete dominance?

It results in a phenotype that is a mixture of the dominant and recessive traits.

Question: Can two homozygous parents produce a heterozygous offspring?

Yes, if they are both homozygous for different traits.

True or false: Incomplete dominance affects genotype only.

False, because it influences both genotype and phenotype.

What does the term 'phenotype' refer to?

The observable characteristics of an organism as a result of its genotype.

How is incomplete dominance used in breeding?

It can produce new varieties with desirable traits, like flower colors.

Question: What is the genotypic ratio in a typical incomplete dominance cross?

1:2:1, representing the homozygous dominant, heterozygous, and homozygous recessive.

Fill in the blank: The allele that expresses is called the _______ allele.

dominant

What visual representation shows inheritance patterns?

A Punnett square, which predicts offspring genotypes from parent genotypes.

Question: Which of the following illustrates incomplete dominance?

A cross between red and white snapdragon flowers resulting in pink flowers.