Through his breeding experiments with pea plants, Mendel established three ... an organism's "external resemblance," and the word "genotype" to refer to what Mendel termed an organism's "internal ...

Mendel chose to cross a pea plant that was homozygous ... yellow seeds and the genotype RrYy. Next, Mendel crossed two plants from the F1 generation. This step is the dihybrid cross, and it ...

The height of pea plants is controlled by a single gene which has two alleles: tall and short. The tall allele is dominant and is shown as T. The small allele is recessive and is shown as t.

Complete a Punnett square like the one shown below to show the possible allele combinations of the offspring produced when two pea plants are bred. Genotype close genotypeThe alleles that an ...