Your question: Is RR an example of homozygous?

Homozygous alleles may be dominant or recessive. A homozygous dominant allele combination contains two dominant alleles and expresses the dominant phenotype (expressed physical trait). … A homozygous plant contains either of the following alleles for seed shape: (RR) or (rr).

Is heterozygous RR OR RR?

A plant with round seeds would have either of the following genotypes: (RR) or (Rr). A plant with wrinkled seeds would have the following genotype: (rr). The heterozygous genotype (Rr) has the dominant round seed shape as its recessive allele (r) is masked in the phenotype.

What are examples of homozygous?

Homozygous examples

  • Eye color. The brown eye color allele is dominant over the blue eye allele. You can have brown eyes whether you’re homozygous (two alleles for brown eyes) or heterozygous (one for brown and one for blue). …
  • Freckles. Freckles are tiny brown spots on the skin. …
  • Hair color. Red hair is a recessive trait.

What is RR in genotype?

RR – meaning a homozygous with both dominant alleles for a trait. rr – meaning- a homozygous with both recessive alleles for a trait.

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Is RR an example of genotype?

The combination of alleles carried by an individual is its genotype. For example, let’s say R (read “big R”) is the dominant round allele, and r (read “little r”) is the recessive wrinkled allele. True-breeding round peas would have two copies of the R allele and a genotype of RR.

What does RR stand for in a Punnett square?

the heterozygous offspring. E.g. RR=Red, Rr=Pink, and rr=white ▪ Co-dominance: Both alleles contribute to the phenotype. Offspring will have combination of two alleles. E.g. RR=Red hair, Rr=Roan (mix of red and white hairs-almost looks pink), and rr=white.

Is HH homozygous or heterozygous?

Half the possible offspring will be homozygous, HH, and half will be heterozygous, Hh.

Is DD a heterozygous or homozygous?

Sally’s genotype is “dd”, so she is also considered homozygous. Susan’s genotype is “Dd”, so she is considered HETEROZYGOUS (has two different alleles for a specific gene). Although Susan has both the allele “D” to make dimples and the allele “d” in her genotype, her phenotype is the presence of dimples.

What is heterozygous and homozygous examples?

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.

What is an example of a 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.

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What is the phenotype of a plant with 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?

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).

What is the phenotype of a plant with the genotype RR quizlet?

What is the phenotype of a plant with a genotype of RR? In snapdragons, flower color is controlled by incomplete dominance. The two alleles are Red (R) and White (W). The heterozygous genotype is expressed as pink.