Contrast the genetic composition of gametes derived from tetrads of inversion heterozygotes where crossing over occurs within a paracentric versus a pericentric inversion.

A person has a WT chromosome with the following segments. A B C • D E F G H. Which of the following shows how the chromosome would look after a pericentric inversion?

From the following list, identify the types of chromosome changes you expect to show phenotypic consequences.

paracentric inversion

From the following list, identify the types of chromosome changes you expect to show phenotypic consequences.

pericentric inversion

A normal chromosome and its homolog carrying a paracentric inversion are shown here. The dot (·) represents the centromere.

Normal        ABC • DEFGHIJK
Inversion     abc • djihgfe

Assume a crossover takes place in the region between A and B. Identify the gametes that are formed by this crossover event, and indicate which if any gametes are viable.

A normal chromosome and its homolog carrying a paracentric inversion are shown here. The dot (·) represents the centromere.

Normal        ABC • DEFGHIJK
Inversion     abc • djihgfe

Assume a crossover takes place in the region between F and G. Identify the gametes that are formed following this crossover, and indicate which if any gametes are viable.

A normal chromosome and its homolog carrying a paracentric inversion are shown here. The dot (·) represents the centromere.

Normal        ABC • DEFGHIJK
Inversion     abc • djihgfe

Diagram the alignment of chromosomes during prophase I.