Complex Patterns of Inheritance

Front

What is the genotype of a colorblind female?

Back

X^bX^b

Front

What is codominance in genetics?

Back

A trait in which a third phenotype appears that includes both parental phenotypes, neither of which is lost.

Front

What is the genotype of a colorblind male?

Back

X^bY

Front

What is an X-linked trait?

Back

A trait that is located on the X chromosome.

Front

What are the chances of a phenotypically normal woman with normal parents being a carrier for hemophilia if she has a hemophilic brother?

Back

50%.

Front

Define incomplete dominance.

Back

A genetic situation in which one allele does not completely dominate another allele, resulting in a new phenotype.

Front

What is polygenic inheritance?

Back

A trait controlled by two or more genes, leading to a continuous range of phenotypes.

Front

What are multiple alleles?

Back

More than two alleles exist for a particular gene, leading to various possible genotypes.

Front

What is the difference between dominant and recessive alleles?

Back

Dominant alleles express their trait even in the presence of a different allele, while recessive alleles only express their trait when two copies are present.

Front

What is the significance of the X chromosome in inheritance?

Back

The X chromosome carries many genes, including those for X-linked traits, which can affect inheritance patterns.