You asked: What are two heterozygous?

When you’re heterozygous for a specific gene, it means you have two different versions of that gene. The dominant form can completely mask the recessive one, or they can blend together.

What are two traits heterozygous?

A dihybrid cross describes a mating experiment between two organisms that are identically hybrid for two traits. A hybrid organism is one that is heterozygous, which means that is carries two different alleles at a particular genetic position, or locus.

What are two heterozygous genotypes examples?

Heterozygous means that an organism has two different alleles of a gene. For example, pea plants can have red flowers and either be homozygous dominant (red-red), or heterozygous (red-white). If they have white flowers, then they are homozygous recessive (white-white).

What are heterozygous pairs?

A gene pair having different alleles in the two chromosome sets of the diploid individual for example, Aa or, A1A2.

What are two dominant traits?

Examples of Dominant Traits

  • Dark hair is dominant over blonde or red hair.
  • Curly hair is dominant over straight hair.
  • Baldness is a dominant trait.
  • Having a widow’s peak (a V-shaped hairline) is dominant over having a straight hairline.
  • Freckles, cleft chin and dimples are all examples of a dominant trait.
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What is a heterozygous trait?

Heterozygous refers to having inherited different forms of a particular gene from each parent. A heterozygous genotype stands in contrast to a homozygous genotype, where an individual inherits identical forms of a particular gene from each parent.

Which is a heterozygous genotype?

An organism with one dominant allele and one recessive allele is said to have a heterozygous genotype. In our example, this genotype is written Bb. Finally, the genotype of an organism with two recessive alleles is called homozygous recessive. In the eye color example, this genotype is written bb.

Is AA a heterozygous genotype?

Individuals with genotype Aa are heterozygotes (i.e., they have two different alleles at the A locus).

What is homozygous example?

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. Keep in mind that an organism can’t simply be ‘homozygous,’ period.

What is the difference between H * * * * * * * * * and heterozygous?

Humans have two sets of chromosomes. Homozygous and heterozygous are terms that are used to describe allele pairs.

Homozygous vs Heterozygous.

Homozygous Heterozygous
Contains only one type of allele, either dominant or recessive Contains different alleles for a trait. Both dominant and recessive

Is BB heterozygous or homozygous?

A bull with two alleles for a black coat is homozygous (BB). A calf that has one allele for red coat color and one allele for black coat color is heterozygous (Bb). Heterozygous individuals contain two different alleles which results in conflicting instructions.

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What is gene pair?

The two copies of a particular gene present in a diploid cell (one in each chromosome set).

When there are 2 dominant alleles for the same gene?


Codominance is a relationship between two versions of a gene. Individuals receive one version of a gene, called an allele, from each parent. If the alleles are different, the dominant allele usually will be expressed, while the effect of the other allele, called recessive, is masked.

Which is an example of co dominance?

Heterozygotes—those with both alleles—carry both antigens. An example of codominance for a gene with multiple alleles is seen in the human ABO blood group system. Persons with type AB blood have one allele for A and one for B; the O allele is recessive (its expression is masked by the other alleles).

Are dimples dominant or recessive?

Dimples—indentations on the cheeks—tend to occur in families, and this trait is assumed to be inherited. Dimples are usually considered a dominant genetic trait, which means that one copy of the altered gene in each cell is sufficient to cause dimples.