Incomplete Dominance Codominance

Front

What is incomplete dominance?

Back

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

Front

What is codominance?

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

In a cross between a red flowered plant (RR) and a white flowered plant (WW) with incomplete dominance, what color will the offspring be?

Back

The offspring will be pink (RW), as the traits blend.

Front

If a woman with curly hair (CC) and a man with straight hair (SS) have a child with wavy hair (CS), what type of inheritance is this an example of?

Back

This is an example of incomplete dominance.

Front

What is the expected phenotype ratio of offspring from a cross of two heterozygous plants (RW x RW) showing incomplete dominance?

Back

The expected phenotype ratio is 1 red (RR): 2 pink (RW): 1 white (WW).

Front

In codominance, how do the alleles express themselves in the phenotype?

Back

Both alleles are expressed equally and separately in the phenotype.

Front

What is a Punnett square used for?

Back

A Punnett square is used to predict the genotypes and phenotypes of offspring from a genetic cross.

Front

If a child has a phenotype that shows both red and white patches, what type of inheritance is this?

Back

This is an example of codominance.

Front

What is the genotype of a plant that has pink flowers due to incomplete dominance?

Back

The genotype is RW, where R is the allele for red and W is the allele for white.

Front

In a genetic cross, what does the term 'homozygous' mean?

Back

Homozygous refers to having two identical alleles for a particular gene (e.g., RR or WW).