Companion PDF worksheet for Edexcel IGCSE Biology Lecture 40 - Variation in a Species. Contains short answer questions, an activity requiring lateral thinking and exam-style questions.
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 Worksheets are available.
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