Mendelian & Non-Mendelian Genetics

Front

What is codominance in genetics?

Back

Codominance is a genetic scenario in which both alleles in a heterozygote are fully expressed, resulting in a phenotype that is neither dominant nor recessive. Example: In speckled carnations, both red and white colors are expressed.

Front

What are the genotypes for red, white, and speckled carnations?

Back

Red = RR, White = WW, Speckled = RW.

Front

What is the phenotype of a heterozygous chicken with one allele for black feathers and one for white feathers?

Back

The phenotype will be speckled black and white feathers.

Front

What do you call the physical expression of a gene?

Back

Phenotype.

Front

What are alleles?

Back

Alleles are different forms of a gene that can exist at a specific locus on a chromosome.

Front

What is a homozygous dominant genotype?

Back

A genotype where both alleles for a trait are dominant, such as BB, AA, TT, LL.

Front

What is the difference between genotype and phenotype?

Back

Genotype refers to the genetic makeup of an organism, while phenotype refers to the observable physical traits.

Front

What is an example of a trait that exhibits codominance?

Back

The feather color in certain chicken breeds, where black and white feathers are both expressed.

Front

What is the term for a genotype with two identical alleles for a trait?

Back

Homozygous.

Front

What is the term for a genotype with two different alleles for a trait?

Back

Heterozygous.