Since Mendel's time, types of inheritance that don't follow Mendel's rules have been discovered.Which of the following situations is NOT an exception to Mendel's rules?
A) A phenotype in the offspring is intermediate between the two parental phenotypes.
B) Phenotypes of the offspring show range of phenotypes rather that two distinct phenotypes.
C) When doing a dihybrid cross between two heterozygous F1 offspring, the ratio obtained is statistically different from the Mendelian ratio.
D) When an individual with a heterozygous phenotype for a trait is crossed with an individual with a homozygous recessive phenotype, the ratio of phenotypes of the offspring is 1:1.
E) Two or more gene pairs are involved in producing the phenotypes of a given trait.

Question

Quizplus · Accepted Answer

This situation, where an individual with a heterozygous phenotype for a trait is crossed with an individual with a homozygous recessive phenotype, follows Mendel's law of segregation and would produce a phenotypic ratio of 1:1. The other options (A, B, C, and E) describe exceptions to Mendelian inheritance.

Since Mendel's Time, Types of Inheritance That Don't Follow Mendel's