In pea plants, purple flowers (p) are dominant over white flowers (p). if two heterozygous purple-flowered plants are crossed with each other, then what are the possible genotypes of the offspring? a) pp only b) pp and pp c) pp and pp d) pp, pp and pp

When you are talking about a heterozygous cross, then it both of those flowers would be Pp. If you were to do the Punnett Square, then the possible genotypes could be Pp, PP and pp. Which means the answer would be D. 

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