Exploring Co-dominance and Incomplete Dominance

The video tutorial explains the concepts of complete dominance, co-dominance, and incomplete dominance using examples of blood types and flower colors. Complete dominance is illustrated with blood type A, where the A allele is dominant over O. The flower example demonstrates complete dominance with red petals, co-dominance with both red and blue petals, and incomplete dominance with a purple flower. The tutorial emphasizes understanding these patterns through genotype and phenotype relationships.

What is the term used for an individual with two identical alleles for a trait?

• Recessive

• Dominant

• Homozygous

• Heterozygous

In the blood type example, which allele is dominant over the O allele?

• O

• AB

• A

• B

What is the phenotype of a person with the AO genotype in the context of blood type?

• Blood type O

• Blood type A

• Blood type B

• Blood type AB

Which pattern of dominance results in a phenotype that shows traits of both alleles?

• Complete Dominance

• Co-Dominance

• Incomplete Dominance

• Partial Dominance

In the flower example, what phenotype would you expect from a genotype with two red Rs under complete dominance?

• Blue petals

• Purple petals

• Red petals

• Mixed petals

What is the phenotype of a flower with a heterozygous genotype (red R, blue R) under co-dominance?

• Red petals

• Blue petals

• Red and blue petals

• Purple petals

Under incomplete dominance, what would be the phenotype of a flower with a heterozygous genotype (red R, blue R)?

• Red petals

• Blue petals

• Purple petals

• Red and blue petals

Which dominance pattern results in a mixture of the two alleles in the phenotype?

• Partial Dominance

• Incomplete Dominance

• Co-Dominance

• Complete Dominance

In the summary, what is the phenotype of a flower with both red and blue petals?

• Complete Dominance

• Co-Dominance

• Incomplete Dominance

• Partial Dominance

What is the phenotype of a flower with a heterozygous genotype (red R, blue R) under complete dominance?

• Blue petals

• Red and blue petals

• Red petals

• Purple petals