Other Patterns of Inheritance

Front

What is codominance?

Back

A genetic scenario where both alleles in a heterozygote are fully expressed, resulting in offspring with a phenotype that is neither dominant nor recessive. Example: Red (RR) and blue (BB) flowers produce speckled (RB) flowers.

Front

What is the phenotypic ratio when crossing a red flower (RR) with a blue flower (BB) in codominance?

Back

4 speckled (RB) flowers.

Front

What is the result of crossing a red radish (RR) with a purple radish (RW)?

Back

2 red (RR) and 2 purple (RW) radishes.

Front

What type of inheritance involves multiple genes and results in a range of traits?

Back

Polygenic traits.

Front

What is the result of crossing a red radish (RR) with a white radish (WW)?

Back

4 purple (RW) radishes.

Front

Define incomplete dominance.

Back

A form of inheritance where the phenotype of a heterozygote is intermediate between the phenotypes of the two homozygotes. Example: Red (RR) and white (WW) flowers produce pink (RW) flowers.

Front

What is a pure breeding organism?

Back

An organism that, when mated with another of the same genotype, will produce offspring with the same phenotype.

Front

What is the difference between dominant and recessive alleles?

Back

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

Front

What is a genotype?

Back

The genetic constitution of an individual, represented by the alleles they possess (e.g., RR, RW, WW).

Front

What is a phenotype?

Back

The observable physical or biochemical characteristics of an organism, determined by both genetic makeup and environmental influences.