Question

In pea, round yellow parent type is crossed with wrinkled green parent type. In the progeny about quarter of the plants are round yellow, quarter are round green, quarter are wrinkled yellow and quarter are wrinkled green. Determine the genotypes of the parents given that round is dominant over wrinkled seed shape and yellow color of the seed is dominant over green color.

Answer 1

R-round
r-wrinkled
Y-yellow
y-green

parents RrYy ×. rryy

gametes. RY Ry rY ry. ry

F1 hybrid. RrYy. Rryy. rrYy. rryy
round yellow. round green. wrinkled yellow. wrinkled green