Incomplete Dominance and codominance

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 heterozygous individual are fully expressed, resulting in offspring with a phenotype that shows both traits simultaneously.

Front

What is the phenotypic ratio when crossing a red flower (RR) with a speckled flower (WB)?

Back

2 red, 2 speckled.

Front

What is the expected percentage of pink flowers (RW) when crossing a red flower (RR) with a white flower (WW) under incomplete dominance?

Back

100%.

Front

What is the phenotypic ratio when crossing a red flower (RR) with a white flower (WW) under codominance?

Back

4 speckled.

Front

In codominance, what happens when a red flower (RR) is crossed with a white flower (WW)?

Back

The offspring will have a speckled phenotype (RW).

Front

What is the expected percentage of white offspring when crossing two cats with incomplete dominance?

Back

0%.

Front

Define the term 'allele'.

Back

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

Front

What is a Punnett square used for?

Back

A Punnett square is a diagram used to predict the outcome of a genetic cross by showing the possible combinations of alleles.

Front

What does it mean if a trait is dominant?

Back

A dominant trait is one that will express itself in the phenotype even if only one copy of the allele is present.