Respuesta :
The yellow seed color (Y) is dominant to green seed color (y). A homozygous green pea plant is crossed with a heterozygous yellow pea plant. The predicted phenotypic ratio of the offspring is 50 percent Yy and 50 percent yy.
Further Explanation:
Genotypes help in the genetic makeup of any individual. Phenotype describes as a physical characteristic of an individual. The genotype is responsible for the phenotypes of any individual. If two copies of the same alleles present in an organism, its genotype is called homozygous. If two copies of different alleles present in an organism, its genotype is called heterozygous.
When a homozygous dominant individual is crossed with the homozygous recessive individual the resultant offspring has the genotype which is heterozygous and phenotype which is dominant. All possible genotypes of the parent as well as offspring are graphically represented in a Punnett square.
The seed color yellow is dominant over green. In a given punnet square below, the homozygous green plant is crossed with the heterozygous yellow plant. Then the resulting offspring of first generation have fifty percent of yy which is heterozygous and fifty percent Yy which is homozygous.
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Answer Details:
Grade: High School
Subject: Biology
Chapter: Mendelian Inheritance
Keywords:
Punnet square, genotype, phenotype, homozygous, heterozygous, allele, characteristics, filial generation, dominant, recessive.
Based on dominant traits, the phenotypic ratio of the offspring is 1:1
What is the phenotypic ratio of offspring of a h0m0zygous green pea plant crossed with a heterozygous yellow pea plant?
Th cross between a h0m0zygous green pea plant and a heterozygous yellow pea plant, can be represented as follows:
Let G represent green colour and Y represent yellow colour.
Parents : GG YG
Offspring: GY, GY, GG, GG.
Since yellow is dominant over green, the heterozygous offspring will all be yellow. Only the h0m0zygous offspring will appear green.
Therefore, the phenotypic ratio of the offspring is 1:1
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