QQuestion
Which of the following genotypes is completely different from the rest in respect of its phenotype—YYRR, yyRR, YYRr and YyRR?
✓Answer
yyRR
Explanation:
In dihybrid inheritance, YYRR, YYRr and YyRR all have at least one dominant allele Y and R each, so they express the same phenotype (yellow and round). yyRR has recessive yy for first character and therefore shows different phenotype (green and round).
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