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  4. When yellow round heterozygous pea plants are self fertilized, the frequency of occurrence of RrYY genotype among the offsprings is

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Q. When yellow round heterozygous pea plants are self fertilized, the frequency of occurrence of RrYY genotype among the offsprings is

KEAMKEAM 2012Principles of Inheritance and Variation

Solution:

Yellow round heterozygous pea plant may be represented by genotype RrYy. On selfing such plants following results will be obtained.
image
Hence, total 16 genotypes will be obtained in the next generation out of which the frequency of occurrence of RrYY genotype is 2, as illustrated by the table above.