Non-Mendelian DOL L1

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 Co-Dominance?

Back

A genetic situation where both alleles in a heterozygote are fully expressed, resulting in offspring with a phenotype that shows both traits equally.

Front

If a red flowered plant (RR) breeds with a white flowered plant (WW) and the gene for petal color expresses incomplete dominance, what will be the color of the offspring?

Back

The offspring will be pink (RW).

Front

In a cross between a red flowered plant (RR) and a white flowered plant (WW) with incomplete dominance, what percentage of the offspring will have pink flowers?

Back

100% of the offspring will have pink flowers.

Front

What is an example of Co-Dominance?

Back

An example of co-dominance is a flower that has both red and white petals when a red flowered plant (RR) is crossed with a white flowered plant (WW).

Front

What is an example of Incomplete Dominance?

Back

An example of incomplete dominance is when a red flowered plant (RR) is crossed with a white flowered plant (WW) resulting in pink flowers (RW).

Front

What happens when one allele is not dominant over the other?

Back

Both traits are expressed in a heterozygous individual, which is known as co-dominance.

Front

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

Back

The phenotype is a blend of the two parental traits.

Front

In a genetic cross, what does the term 'allele' refer to?

Back

An allele is a variant form of a gene that can produce different traits.

Front

What is the difference between dominant and recessive alleles?

Back

A dominant allele masks the effect of a recessive allele in a heterozygous individual.