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 homozygous dominant genotype?

Back

A homozygous dominant genotype has two dominant alleles, represented as AA.

Tags

NGSS.HS-LS3-2

Front

What is a homozygous recessive genotype?

Back

A homozygous recessive genotype has two recessive alleles, represented as aa.

Front

What is an example of a heterozygous genotype?

Back

An example of a heterozygous genotype is Aa, where one allele is dominant and the other is recessive.

Front

How can you identify a homozygous dominant genotype?

Back

A homozygous dominant genotype can be identified by the presence of two identical dominant alleles, such as FF.

Front

How can you identify a homozygous recessive genotype?

Back

A homozygous recessive genotype can be identified by the presence of two identical recessive alleles, such as nn.

Front

What is the significance of genotype in genetics?

Back

Genotype determines the genetic makeup of an organism and influences its traits.

Tags

NGSS.HS-LS3-1

NGSS.HS-LS3-2

Front

What is the difference between genotype and phenotype?

Back

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

Tags

NGSS.HS-LS1-1

Front

Can a heterozygous genotype express a dominant trait?

Back

Yes, a heterozygous genotype can express a dominant trait because the dominant allele masks the effect of the recessive allele.