Homozygous vs Heterozygous

Front

What does homozygous mean?

Back

Homozygous refers to having two identical alleles for a particular gene, such as AA or aa.

Front

What does heterozygous mean?

Back

Heterozygous refers to having two different alleles for a particular gene, such as Aa.

Front

What is a genotype?

Back

A genotype is the genetic makeup of an organism, represented by the alleles it possesses.

Front

What is a phenotype?

Back

A phenotype is the observable physical or biochemical characteristics of an organism, determined by its genotype.

Front

What is the difference between homozygous dominant and homozygous recessive?

Back

Homozygous dominant has two dominant alleles (e.g., AA), while homozygous recessive has two recessive alleles (e.g., aa).

Front

Give an example of a heterozygous genotype.

Back

An example of a heterozygous genotype is Aa.

Front

Give an example of a homozygous dominant genotype.

Back

An example of a homozygous dominant genotype is AA.

Front

Give an example of a homozygous recessive genotype.

Back

An example of a homozygous recessive genotype is aa.

Front

What is the significance of alleles in genetics?

Back

Alleles are different forms of a gene that determine specific traits in an organism.

Front

How can you identify a heterozygous genotype from a homozygous genotype?

Back

A heterozygous genotype has two different alleles (e.g., Aa), while a homozygous genotype has two identical alleles (e.g., AA or aa).