Genotype and phenotype Transitional Reasoning Download PDF

Questions

1. 1.

   In garden peas, the allele for tall stems (T) is dominant over the allele for dwarf stems (t). A researcher crosses two tall pea plants, and the resulting progeny consists of 148 tall plants and 52 dwarf plants. Based on these data, which conclusion accurately distinguishes the genotypes and phenotypes of the plants involved in this cross?

   • A) Both parent plants possess the homozygous dominant genotype TT because they display the dominant tall phenotype.
   • B) The dwarf offspring share the same phenotype as the parents while having a different genotype.
   • C) All tall offspring from this cross possess identical genotypes because they express the same observable physical trait.
   • D) Both parents share the same phenotype while having a heterozygous genotype (Tt), producing tall offspring with two different genotypes (TT and Tt).