What is the phenotype of RR?

Asked By: Paun Bowinkelmann | Last Updated: 18th April, 2020
Category: science genetics
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The result in the heterozygous genotype (Rr) is a phenotype that is a mixture of red and white, or pink.

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Besides, what is the genotype of RR?

A homozygous plant contains either of the following alleles for seed shape: (RR) or (rr). The (RR) genotype is homozygous dominant and the (rr) genotype is homozygous recessive for seed shape. In the image above, a monohybrid cross is performed between plants that are heterozygous for round seed shape.

Additionally, what is the phenotype of RR can roll tongue? A phenotype is a description of what an organism looks like based on its genotype. A person with the Rr genotype for tongue rolling would be able to roll his or her tongue, because he or she has the dominant allele that allows tongue rolling. So “tongue rolling” is his or her phenotype.

Beside this, what is the phenotype of a plant with genotype RR?

For this plant, the genotype for leaf color is RR , which is homozygous dominant, consisting of two dominant alleles. Since the only allele possible is dominant, the plant will express the dominant phenotype, which is red leaf color.

What is the genotype from the cross between RR and RR?

For example, a test cross between two organisms with same genotype, Rr, for a heterozygous dominant trait will result in offspring with genotypes: RR, Rr, and rr. And in this example, the predicted genotypic ratio is 1:2:1.

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What does phenotype mean in biology?

Phenotype, all the observable characteristics of an organism that result from the interaction of its genotype (total genetic inheritance) with the environment. Examples of observable characteristics include behaviour, biochemical properties, colour, shape, and size.

What does genotype mean in biology?

Genotype, the genetic constitution of an organism. The genotype determines the hereditary potentials and limitations of an individual from embryonic formation through adulthood. Among organisms that reproduce sexually, an individual's genotype comprises the entire complex of genes inherited from both parents.

What phenotype best describes RR?

The allele that produces red flower color (R) is not completely expressed over the allele that produces white flower color (r). The result in the heterozygous genotype (Rr) is a phenotype that is a mixture of red and white, or pink.

What does homozygous mean in biology?

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.

Does true breeding mean homozygous?


True breeding. A true breeding is a kind of breeding wherein the parents would produce offspring that would carry the same phenotype. This means that the parents are homozygous for every trait. For this to occur the parents are homozygous for a trait — which means the parents must be both dominant or both recessive.

Is TT a heterozygous or homozygous?

An organism can be either homozygous dominant (TT) or homozygous recessive (tt). If an organism has two different alleles (Tt) for a certain gene, it is known as heterozygous (hetero means different).

What is another word for homozygous?

another word for homozygous. Heterozygous. two different alleles (Bb) Hybrid.

What do you mean by genotype?

Genotype Explained
Genotype is the collection of genes responsible for the various genetic traits of a given organism. The combination of the two, and which one is dominant, determines what trait the allele will express. Genotype simply means what alleles are carried in a particular organism's DNA.

What does Codominance mean?

Codominance is a form of inheritance wherein the alleles of a gene pair in a heterozygote are fully expressed. As a result, the phenotype of the offspring is a combination of the phenotype of the parents. Thus, the trait is neither dominant nor recessive.

What is complete dominance?


Complete dominance is a form of dominance in heterozygous condition wherein the allele that is regarded as dominant completely masks the effect of the allele that is recessive. For instance, an individual carrying two alleles that are both dominant (e.g. AA), the trait that they represent will be expressed.

What is the genotype of the pink flowers?

The genotype for the pink flower is Rr and the genotype for the white flower is rr. This would lead to a 50% chance of the offspring having a phenotype of pink.

What is an example of Codominance?

When two alleles for a trait are equally expressed with neither being recessive or dominant, it creates codominance. Examples of codominance include a person with type AB blood, which means that both the A allele and the B allele are equally expressed.

What is Dihybrid cross in biology?

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 is polygenic inheritance?

Polygenic inheritance occurs when one characteristic is controlled by two or more genes. Often the genes are large in quantity but small in effect. Examples of human polygenic inheritance are height, skin color, eye color and weight. Polygenes exist in other organisms, as well.

How do you find the phenotypic ratio?


Write the amount of homozygous dominant (AA) and heterozygous (Aa) squares as one phenotypic group. Count the amount of homozygous recessive (aa) squares as another group. Write the result as a ratio of the two groups. A count of 3 from one group and 1 from the other would give a ratio of 3:1.

What is the phenotype of this plant?

The phenotype of a plant is a term used to describe observable characteristics, such as height, biomass, leaf shape and so on. We use the term phenotype in a more specific context to describe the collective expression of the genotype in conjunction with the environment on a plant's observable characteristics.

Can two plants with purple flowers produce offspring with white flowers?

For example, they may recognize that a plant with white flowers crossed with itself or another plant with white flowers will produce only white flowered plants, while a purple-flowered plant crossed with itself or another purple-flowered plant sometimes produces white-flowered offspring.