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homozygous dominant means two alleles that are the same that are capital letters, heterozygous recessive means that to alleles are different BUT the same letters in lower case.

(alleles for gender)

EX:

TT, Tt is homozygous dominant

tt, tt is heterozgous recessive

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15y ago

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How do genetics represent h dominant and Recessive allele?

A dominant genotype is represented as DD or Dd but with many different letters. The DD is a homozygous dominant, while the Dd is the heterozygous dominant. Recessive is always represented as dd or rr or whatever letter you want to use. It is always homozygous recessive. There can never be a heterozygous recessive.


What are the names of the genotypes?

There are many genotypes with specific names depending on the organism. For example, in humans, genotypes can include AA, Aa, or aa for single gene traits. In plants, genotypes may be represented by combinations of letters and symbols. Overall, genotypes are named based on the specific alleles an individual carries for a particular gene.


Why is an organism genotype may be homozygous dominant homozygous recessive or heterozygous but never heterozygous recessive?

I take it you're referring to the phenotype. Say a trait, like flower colour, is influenced by a single gene. The plant will possess two copies of the gene, one from each parent, but only one colour is expressed. Let's say that red is dominant and white is recessive. A plant containing 2 red alleles (homozygous for the dominant allele) will be red. A plant containing 2 copies of the white allele (Homozygous recessive) will be white and heterozygous plant, containing a single copy of both alleles will be red. There is no heterozygous recessive because the dominant allele will determine the phenotype.


What type of letter do you use to represent a dominant trait?

Capital letter such as R for dominant and r for recessive trait


Homozygous dominant homozygous recessive?

Homozygous dominant individuals have two identical dominant alleles for a particular gene, resulting in the expression of the dominant trait. Homozygous recessive individuals have two identical recessive alleles, resulting in the expression of the recessive trait.


What is a homozygous dominant?

Homozygous is a word that refers to a particular gene that has identical alleles on both homologous chromosomes. It is referred to by two capital letters (XX) for a dominant trait, and two lowercase letters (xx) for a recessive trait.


How do you represent alleles?

Alleles are represented as: Gg Where G is the dominant trait and g is the recessive trait Therefore, homozygous dominant would be: GG Homozygous recessive would be: gg and heterozygous would be Gg


Is AA a homozygous genotype?

homozygous = AA & AA Heterozygous = Aa


What is recessive gene and dominant gene?

A dominant gene is always expressed if present, and the recessive gene is only expressed with the homozygous recessive genotype. For example, if the dominant gene is red (represented by the letter R) and the recessive gene is white (represented by the letter r), then a homozygous dominant organism's genotype will be RR, and its phenotype will be red. If the organism is homozygous recessive, then the genotype will be rr and the phenotype will be white. If the organism is heterozygous, then the genotype will be Rr, and the organism will be red.


Is the trait TT heterozygous or homozygous?

Yes.A homozygous genotype is a gene with two identical alleles. Recessive genes are represented by a lowercase letter. Thus, a homozygous recessive genotype would be two identical genes with lowercase letters.


Which alleles is the recessive alleles?

Recessive alleles are alleles that are masked or overshadowed by dominant alleles. In a heterozygous genotype, the recessive allele does not show its effects. Only in a homozygous recessive genotype does the recessive allele manifest its trait.


Which is a heterozygous or hydrid genotype?

A heterozygous genotype consists of a dominant gene and a recessive gene. Homozygous genotypes consist of two dominant genes (Homozygous Dominant) ro two recessive genes (Homozygous Recessive).Heterozygous: XxHomozygous: Dom. XXRec. xx