Unit 7 Inc, Co and Blood Type Fall 2021

Front

What is incomplete dominance?

Back

A genetic situation in which one allele does not completely dominate another allele, resulting in a new phenotype that is a blend of the two traits.

Front

What is codominance?

Back

A genetic scenario where both alleles in a heterozygote are fully expressed, resulting in offspring with a phenotype that is neither dominant nor recessive.

Front

What is the genotype of a red flowered plant in incomplete dominance?

Back

RR (homozygous dominant) for red color.

Front

What is the genotype of a white flowered plant in incomplete dominance?

Back

R'R' (homozygous recessive) for white color.

Front

If a red flowered plant (RR) is crossed with a white flowered plant (R'R'), what will be the phenotype of the offspring?

Back

100% pink flowers (RR').

Front

What is the phenotype of a plant with genotype AB for blood type?

Back

Type AB blood, which shows both A and B antigens.

Front

What is the significance of codominance in blood types?

Back

In blood types, alleles A and B are codominant, meaning both can be expressed simultaneously in the phenotype.

Front

What is the phenotype of a person with genotype OO for blood type?

Back

Type O blood, which has no A or B antigens.

Front

What type of inheritance occurs when traits blend together?

Back

Incomplete dominance.

Front

What is the result of a cross between two heterozygous plants (RR' x RR') in incomplete dominance?

Back

25% red (RR), 50% pink (RR'), 25% white (R'R').