What trait did heterozygous individual express?

What trait will a heterozygous individual express?

Specifically, heterozygous (Ss) individuals express both normal and sickle hemoglobin, so they have a mixture of normal and sickle red blood cells. In most situations, individuals who are heterozygous for sickle-cell anemia are phenotypically normal. Under these circumstances, sickle-cell disease is a recessive trait.

What if an individual were heterozygous?

If the alleles are heterozygous, the dominant allele would express itself over the recessive allele, resulting in brown eyes. At the same time, the person would be considered a “carrier” of the recessive allele, meaning that the blue eye allele could be passed to offspring even if that person has brown eyes.

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.

Is heterozygous a recessive trait?

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). Carriers are always heterozygous.

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What are homozygous and heterozygous traits?

Homozygous: You inherit the same version of the gene from each parent, so you have two matching genes. Heterozygous: You inherit a different version of a gene from each parent. They do not match.

Which trait is homozygous dominant?

A homozygous dominant genotype is one in which both alleles are dominant. For example, in pea plants, height is governed by a single gene with two alleles, in which the tall allele (T) is dominant and the short allele (t) is recessive.

Which traits are homozygous?

Being homozygous for a particular gene means you inherited two identical versions. It’s the opposite of a heterozygous genotype, where the alleles are different. People who have recessive traits, like blue eyes or red hair, are always homozygous for that gene.

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 term describes an individual who is heterozygous for a recessive disorder?

carrier. an individual who is heterozygous for a trait that only shows up in the phenotype of those who are homozygous recessive. Carriers often do not show any signs of the trait but can pass it on to their offspring.

When is a dominant trait expressed?

Dominant: A genetic trait is considered dominant if it is expressed in a person who has only one copy of that gene. … A dominant trait is opposed to a recessive trait which is expressed only when two copies of the gene are present.

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How do we know whether an organism expressing a dominant trait is heterozygous or homozygous?

To identify whether an organism exhibiting a dominant trait is homozygous or heterozygous for a specific allele, a scientist can perform a test cross. … If the test cross results in any recessive offspring, then the parent organism is heterozygous for the allele in question.