Best answer: What does it mean if someone has a heterozygous genotype?


What is an example of a genotype heterozygous?

There are different versions of genes. … If the two versions are different, you have a heterozygous genotype for that gene. For example, being heterozygous for hair color could mean you have one allele for red hair and one allele for brown hair. The relationship between the two alleles affects which traits are expressed.

Is AA genotype heterozygous?

Two dominant alleles (AA) or two recessive alleles (aa) are homozygous. One dominant allele and one recessive allele (Aa) is heterozygous.

What is a heterozygous genotype?

(HEH-teh-roh-ZY-gus JEE-noh-tipe) The presence of two different alleles at a particular gene locus. A heterozygous genotype may include one normal allele and one mutated allele or two different mutated alleles (compound heterozygote).

Is AA heterozygous or homozygous?

If an organism has two copies of the same allele, for example AA or aa, it is homozygous for that trait. If the organism has one copy of two different alleles, for example Aa, it is heterozygous.

Is it better to be homozygous or heterozygous?

Some common terminologies often used in genetics are gene, allele, DNA, chromatin, homozygous, heterozygous, nullizygous, dominant and recessive, etc, which is indeed hard to understand.


Homozygous Heterozygous
When two identical alleles are present. When two different alleles are present.
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