Question

in pea plant,tallness is dominant over shortness and green flower is dominant over yellow flowers.Find out the F1 and F2 if they are crossing between Tall yellow X Short green

Answer 1

P1 (parents)

Phenotype: Yellow Seeds X Green Seeds Genotype: YY X yy


Gametes: Y y



F1 cross (First Filial)

Phenotype: All Yellow seeds


Genotype: Yy




F2 (Second Filial) cross the F1 to the F1


Phenotype: Yellow Seeds X Yellow Seeds

Genotype: Yy X Yy


F1 Gametes: Y, Y and Y, y


Offspring genotypic ratio: 1/4 LL, 1/4 Ll, 1/4 lL, 1/4 ll

Phenotypic ratio: 3 Long Stemmed: 1 short stemmed


The Yellow seed coat trait is DOMINANT to the green seeded trait. The Dominant gene is drawn with a capital letter, and the recessive gene has the same letter as the dominant gene, only in the lower case.