In a cross between a true-breeding plant bearing the dominant traits of smooth,yellow seeds and a true-breeding plant bearing the recessive traits of wrinkled,green seeds,the offspring (F1)are all smooth and yellow and their genotype is ____.
A) SSYY
B) ssyy
C) SsYy
D) ssYY
E) SSyy

Question

Quizplus · Accepted Answer

Based on the given information, the dominant traits are smooth and yellow, which are represented by S and Y respectively. The recessive traits are wrinkled and green, represented by s and y respectively. Since the parents are true-breeding for each trait, the genotype of the smooth, yellow parent would be SSYY and the genotype of the wrinkled, green parent would be ssyy. In the F1 generation, all the offspring are smooth and yellow, indicating that they have inherited one dominant allele for smoothness and one dominant allele for yellowness from each parent. Therefore, the genotype of the F1 offspring would be SsYy.

In a Cross Between a True-Breeding Plant Bearing the Dominant