Is RR homozygous or heterozygous?

What phenotype is RR?

When ever the R gene is present in the genotype of a plant, the flower color is always red. The mutant form of this gene, which is recessive, is often written r. Plants with the genotype RR or Rr have red flowers. Plants with the genotype rr have white flowers.

What is the phenotype of RR alleles?

RR x rr. You’ll note that 100% of all offspring are Rr, which is the genotype. Since the genotype for all offspring are the same, and the Rr genotype encodes a pink color, then 100% of the phenotypes will be pink (NOT red – remember that this is incomplete dominance).

Is RR a genotype or phenotype?

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.

What is RR Punnett Square?

RR or rr is a purebred trait. phenotype – Phenotype is the physical appearance of the organism. For example whether the organism is green, yellow, round, wrinkled, pink, blue etc. Here is the problem we are going to solve. In pea plants, round seeds are dominant over wrinkled seeds.

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Is RR a heterozygous?

The heterozygous genotype (Rr) has the dominant round seed shape as its recessive allele (r) is masked in the phenotype.

Is RR an allele?

An individual who carries two different alleles (i.e. Rr) is a heterozygote (hetero = different). A dash (-) is used to represent an unknown allele or a mix of alleles. For example, a round pea randomly picked from Mendel’s garden would have the genotype R-, since it could be either homozygous dominant or heterozygous.

Is PP a heterozygous or homozygous?

Since both heterozygous organisms (Pp) and homozygous dominant organisms (PP) exhibit the same phenotype (purple petals), performing a cross with a plant that is recessive (pp) for the observable trait (white) can be used to determine the phenotype of the unknown plant.

What is heterozygous and homozygous examples?

Homozygous means that the organism has two copies of the same allele for a gene. … 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).

What is an example of heterozygous?

If the two versions are different, you have a heterozygous genotype for that gene. For example, being heterozygous for hair color could mean you have one allele for red hair and one allele for brown hair. The relationship between the two alleles affects which traits are expressed.