What allele represents a yellow pea?

We’ll use letters to represent alleles. Capital “A” will represent the yellow pea allele and lowercase “a” will represent the green pea allele. The yellow pea phenotype has a genotype of AA. The green pea phenotype has a genotype of aa.

What is the allele for yellow peas?

Peas are yellow when they have either two yellow alleles . . . . . . or one yellow allele and one green allele. Green peas must have two copies of the recessive green allele. Now, let’s see how the genes sort out when we cross two heterozygous plants.

What are the alleles of a pea plant?

For example: The Yellow and Green pea trait is controlled by the alleles called Y and y. The Round and Wrinkled pea trait is controlled by the alleles called R and r. Alleles are, in a sense, different versions of a single characteristic.

Are yellow peas dominant or recessive?

Yy pea plants? Turns out they have yellow peas because the yellow version, Y, is dominant over the recessive green version, y. Y always wins out over y: When a pea plant makes seeds, only one of its two copies of the color gene goes into the seed.

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What is the genotype for a heterozygous yellow pea?

Answer and Explanation:

Heterozygous pea plants will, by definition, have the genotype Yy, with one dominant yellow allele and one recessive green allele.

What do alleles represent?

Each pair of alleles represents the genotype of a specific gene. Genotypes are described as homozygous if there are two identical alleles at a particular locus and as heterozygous if the two alleles differ. Alleles contribute to the organism’s phenotype, which is the outward appearance of the organism.

Is RR homozygous or heterozygous?

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.

What are alleles give example?

In a diploid organism, one that has two copies of each chromosome, two alleles make up the individual’s genotype. An example is the gene for blossom color in many species of flower — a single gene controls the color of the petals, but there may be several different versions (or alleles) of the gene.

What is allele example?

Alleles are different forms of the same gene. … An example of alleles for flower color in pea plants are the dominant purple allele, and the recessive white allele; for height they are the dominant tall allele and recessive short allele; for pea color, they are the dominant yellow allele and recessive green allele.

Is yellow pod recessive?

For pod color, there are two traits – green and yellow. Green pod color is dominant and yellow is recessive. The shape of the pod has two traits – inflated and constricted.

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Which allele is dominant?

If the alleles of a gene are different, one allele will be expressed; it is the dominant gene. The effect of the other allele, called recessive, is masked.

Why is the allele for wrinkled seed shape in garden peas considered recessive?

Why is the allele for wrinkled seed shape in garden peas considered recessive? … The trait associated with the allele is not expressed in heterozygotes.

What color of pea seed is dominant?

Green pea seeds are dominant to yellow pea seeds. In a cross between a plant heterozygous for seed color and a yellow-seeded plant, 400 offsprings are produced.

What is the yellow seed genotype?

YY is the homozygous dominant genotype (2 Y alleles). The phenotype of this genotype is yellow seed color. Yy is the heterozygous genotype (one dominant allele, one recessive allele). The phenotype of this genotype is yellow seed color.

What is the genotype of yellow colored parent?

The dominant seed color is yellow; therefore, the parental genotypes were YY for the plants with yellow seeds and yy for the plants with green seeds.

What is the genotype of the heterozygote?

Listen to pronunciation. (HEH-teh-roh-ZY-gus JEE-noh-tipe) 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).