Question

In Mendel's experiments with garden pea, round seed shape (RR) was dominant over wrinkled seeds (rr) and yellow cotyledon (YY) was dominant over green cotyledon (yy). What are the expected phenotypes in the F1-generation of the cross RRYY x rryy ? Your Answer: CorrectCorrect 1) Only round seeds with yellow cotyledons 2) Only wrinkled seeds with yellow cotyledons 3) Only wrinkled seeds with green cotyldons Correct 4) Round seeds with yellow cortyledons and wrinkled seeds with yellow cotyledons

Answer 1

Answer:

˙·٠•●♥ SINCE, ROUND SEED SHAPE (RR) WAS DOMINANT OVER WRINKLED SEED SHAPE (RR), YELLOW COTYLEDON (YY) WAS DOMINANT OVER GREEN COTYLEDON (YY), ROUND SEED WITH YELLOW COTYLEDON WILL BE EXPRESSED IN HETEROGENOUS DIHYBRID GENOTYPE. HENCE, THE CROSS BETWEEN ROUND SEED, YELLOW COTYLEDON PLANT (RRYY) AND WRINKLED SEED, GREEN COTYLEDON PLANT (RRYY) WILL PRODUCE ALL ROUND SEEDS WITH YELLOW COTYLEDON. THUS, OPTION "E" IS CORRECT.

PARENT GENERATION: RRYY X RRYY

GAMETES : RY RY

OFFSPRING : RRYY

♥●•٠·˙

Answer 2

Explanation:

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