Non Mendelian Inheritance

Front

What is Non-Mendelian Inheritance?

Back

Non-Mendelian inheritance refers to patterns of inheritance that do not follow Mendel's laws of inheritance, including incomplete dominance, codominance, and multiple alleles.

Front

Define complete dominance.

Back

Complete dominance occurs when one allele completely masks the effect of another allele in a heterozygous genotype.

Front

What is an example of complete dominance?

Back

An example of complete dominance is the black allele in labrador retrievers, which completely masks the brown allele.

Front

Define incomplete dominance.

Back

Incomplete dominance is a form of inheritance where the phenotype of a heterozygote is intermediate between the phenotypes of the two homozygotes.

Front

What is an example of incomplete dominance?

Back

An example of incomplete dominance is the crossing of red and white snapdragons resulting in pink flowers.

Front

Define codominance.

Back

Codominance occurs when both alleles in a heterozygote are fully expressed, resulting in a phenotype that shows both traits.

Front

What is an example of codominance?

Back

An example of codominance is the AB blood type, where both A and B alleles are expressed.

Front

What is the genotype of offspring from two O blood type parents?

Back

100% OO.

Front

If two parents have type AB blood, what is the probability their child will have type O blood?

Back

0%.

Front

What is the significance of multiple alleles in inheritance?

Back

Multiple alleles refer to the presence of more than two alleles for a genetic trait, allowing for a greater variety of phenotypes.