Powerpoint lecture covering the following in a modern, concise format:

Specification Point 3.31 - Understand how random fertilization produces genetic variation of offspring.

Specification Point 3.32 - Know that in human cells the diploid number of chromosomes is 46 and the haploid number is 23.

Specification Point 3.33 - Understand that variation within a species can be genetic, environmental, or a combination of both.

Specification Point 3.34 - Understand that mutation is a rare, random change in genetic material that can be inherited.

Complete set of Chapter 5 Lectures are available.