Exemplar Problems

Question:

Two heterozygous parents are crossed. If the two loci are linked, what would be the distribution of phenotypic features in F1 generation for a dihybrid cross?

Answer:

In a dihybrid cross where the two loci are linked, the distribution of phenotypic features in the F1 generation would show linkage and may not follow the typical Mendelian 9:3:3:1 ratio for an unlinked dihybrid cross. Instead, the alleles at the two linked loci tend to be inherited together, leading to fewer recombinant phenotypes and more parental combinations.