Chapter 13, Problem 13P

In the following group of figures, the pink lines indicate an area of a chromosome that is inverted relative to the normal (black line) order of genes. The diploid chromosome constitution of individuals 1–4 is shown. Match the individuals with the appropriate statement(s) that follow. More than one diagram may correspond to the following statements, and a diagram may be a correct answer for more than one question.

 

a.	An inversion loop would form during meiosis I.
b.	A single crossover involving the inverted region on one chromosome and the homologous region of the other chromosome would yield genetically unbalanced gametes.
c.	A single crossover involving the inverted region on one chromosome and the homologous region of the other chromosome would yield an acentric fragment.
d.	A single crossover involving the inverted region yields four viable gametes.