Inheritance, Codominance & Incomplete Dominance

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 phenotype results from a cross between a red flower (RR) and a white flower (WW) in incomplete dominance?

Back

All offspring will have pink flowers (RW).

Front

If a black cat (BB) and a gray cat (BW) mate, what percentage of their offspring will be gray?

Back

50% of the offspring will be gray.

Front

What is the phenotype of a heterozygous individual in incomplete dominance?

Back

The phenotype is a blend of the two parental traits.

Front

In the hair form gene, what does SC represent?

Back

SC represents wavy hair, which is the result of incomplete dominance between straight (SS) and curly (CC) hair.

Front

If two wavy-haired parents (SC) have children, what is the probability that one child will also have wavy hair?

Back

There is a 50% chance that a child will have wavy hair.

Front

What is the expected phenotype ratio from a cross of two heterozygous individuals (RW) in incomplete dominance?

Back

1 Red (RR) : 2 Pink (RW) : 1 White (WW).

Front

What is the definition of a phenotype?

Back

The observable physical or biochemical characteristics of an organism, as determined by both genetic makeup and environmental influences.

Front

What is the definition of a genotype?

Back

The genetic constitution of an individual, consisting of the alleles inherited from both parents.