Best answer: What is the definition of homozygous dominant?

Homozygous means that the organism has two copies of the same allele for a gene. An organism can be homozygous dominant, if it carries two copies of the same dominant allele, or homozygous recessive, if it carries two copies of the same recessive allele.

What does homozygous dominant mean?

An organism with two dominant alleles for a trait is said to have a homozygous dominant genotype. Using the eye color example, this genotype is written BB. An organism with one dominant allele and one recessive allele is said to have a heterozygous genotype.

What is homozygous dominant letter example?

When a particular gene has identical alleles (versions) of chromosomes inherited from both parents, the gene is homozygous. … A homozygous trait is referred to by two capital letters (XX) for a dominant trait, and two lowercase letters (xx) for a recessive trait.

What the difference between homozygous dominant and recessive?

Homozygous-dominant chromosomes carry two copies of the allele that codes for the dominant trait whereas the homozygous-recessive chromosomes carry two copies of the allele that codes for the recessive trait. … Homozygous cells or organisms are also called homozygotes.

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What is heterozygous and homozygous?

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.

What does it mean to be heterozygous dominant?

The term “heterozygous” also refers to a pair of alleles. Unlike homozygous, being heterozygous means you have two different alleles. You inherited a different version from each parent. In a heterozygous genotype, the dominant allele overrules the recessive one. Therefore, the dominant trait will be expressed.

What is the definition of homozygous recessive?

Homozygous means that the organism has two copies of the same allele for a gene. An organism can be homozygous dominant, if it carries two copies of the same dominant allele, or homozygous recessive, if it carries two copies of the same recessive allele.

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.

What is homozygous dominant Punnett Square?

Homozygous : Two of the same type of allele, both dominant or both recessive. Punnett square : A method of determining the probabilities of which traits the offspring of two organisms will inherit. 3.

What is difference between homozygous and homogeneous?

Homogeneous and Heterogeneous is different from Homozygous and Heterozygous. On the other hand Homozygous and Heterozygous we use in taking about zygosity. Zygosity is the degree of similarity of the alleles for a trait in an organism. When Homo as you it refers ‘same’ and like this hetero which refers ‘different’.

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What does heterozygous mean in biology?

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).

What is homozygous biology?

(HOH-moh-ZY-gus JEE-noh-tipe) The presence of two identical alleles at a particular gene locus. A homozygous genotype may include two normal alleles or two alleles that have the same variant.

What is the difference in a homozygous trait and a heterozygous trait?

The combination of these alleles determines whether the offspring exhibits homozygous or heterozygous traits. The difference between these traits is: Homozygous traits have two copies of the same allele. Heterozygous traits have one dominant allele and one recessive allele.

What is the difference between homozygous and heterozygous give an example?

A Homozygous individual carries a set of two identical (RR or rr) alleles while a Heterozygous individual bears different alleles (Rr). For example, let us consider the gene of the hair colour possessing two alleles, one allele code is responsible black (r) while the other allele code is responsible for black (R).