Aparticular plant has two alleles that control the length of its stem. t represents the dominant allele that codes for a tall stem, and t represents the recessive allele that codes for a short stem. based on the punnett squares, which two statements are true about the genotype of the plant’s stem length? first generation__t_ tt tt ttt tt ttsecond generation__t_ tt tt ttt tt ttselect all the correct answers. a) plants with short stems are homozygous for that trait. b) plants with tall stems are always homozygous for that trait. c) both parent plants in the second generation are heterozygous. d) both parent plants in the second generation are homozygous.