Incomplete and Co-dominance Practice

Select the dominant allele

• H

• h

Select the recessive allele

• B

• b

Select the homozygous combinations:

• MM

• Mm

• mm

Select the heterozygous combinations:

• RR

• Rr

• rr

Select the genotypes:

• YY

• blue feathers

• Ww

• red seeds

• pp

Select the phenotypes:

• Tt

• EE

• striped fur

• ii

• long eyelashes

What percent of the offspring are homozygous dominant?

• 0%

• 25%

• 50%

• 75%

• 100%

What percent of the offspring are heterozygous?

• 0%

• 25%

• 50%

• 75%

• 100%

What percent of the offspring are homozygous recessive?

• 0%

• 25%

• 50%

• 75%

• 100%

Which term is correctly matched with the description?

• Co-dominance occurs when two traits blend together to form a new phenotype

• Human skin color is an example of codominant trait.

• Incomplete dominance occurs when traits blend producing a third phenotype.

• Human blood type is not an example of multiple alleles.