Chapter 4, Problem 62P

Summary Introduction

To explain: If the test cross between F1 progeny obtained from the parental genotypes A/A · B/B and a/a · b/b and homozygous recessive genotype a/a · b/b provides any evidence of linkage.

Introduction: The linkage between the two genes indicates that the loci of those genes are on the same chromosome. When the two genes are linked, they do not assort independently and do not follow the classical Mendelian ratio, 1:1:1:1.