The genotype ratio of crossing a heterozygous plant for smooth pods (Ss) with a plant that has constricted pods (ss) is 1:1 for the combination of heterozygous smooth (Ss) and constricted (ss) genotypes.
When crossing a plant that is heterozygous for smooth pods (Ss) with a plant that has constricted pods (ss), we can examine the potential genotypes of the offspring. The heterozygous plant carries one dominant allele (S) for smooth pods and one recessive allele (s) for constricted pods. The other parent, with constricted pods, is homozygous recessive (ss).
During the process of genetic recombination, the two parents contribute alleles to form the genotypes of the offspring. The possible outcomes of this cross include heterozygous smooth (Ss) and homozygous recessive constricted (ss) genotypes.
Therefore, the genotype ratio among the offspring is 1:1 for the combination of heterozygous smooth (Ss) and homozygous recessive constricted (ss) genotypes. This reflects the Mendelian principles of inheritance, where the combination of alleles from the parental plants determines the genetic makeup of the resulting offspring.