What is wrong with this A heterozygous pea plant produces yellow seeds and its genotype is Yg, where Y represents the dominant yellow seed allele and g represents the
a) The genotype should be presented as Gg because green is the recessive trait.
b) A heterozygous pea plant with yellow seeds would have the genotype YY or yy.
c) The correct genotype is Yy because yellow is the dominant trait.
d) The genotype Yg would produce green seeds.
1 Answer | Add Yours
In Mendelian genetics, if two pure but contrasting traits are crossed, the dominant trait will be expressed and the recessive will be hidden in the next generation. In the problem above, pea plant seeds have two alleles, dominant yellow and recessive green. If you use an upper case Y to represent the Yellow color and a lower case y, to represent the green color, then the heterozygous pea plant will have the genotype Yy. This plant has one yellow and one green allele. This plant would produce all yellow seeds because the dominant allele for yellow is expressed, while the allele for green is hidden. Therefore, the answer to your question is choice c--the correct genotype is Yy because yellow is the dominant trait. You don't need to use the letter g to represent green at all in this problem.
We’ve answered 317,755 questions. We can answer yours, too.Ask a question