Topic 16: Inherited change (CIE A-level Biology)

Meiosis, genetic inheritance and the control of gene expression are some of the harder topics on this A-level Biology course and all three are covered in topic 16 (Inherited change) of the CIE A-level Biology specification. The 10 lessons included in this bundle have been planned at length and contain a wide range of tasks that cover the detailed content whilst checking on understanding and key terms and values are introduced through engaging quiz competitions.

The following topic 16 specification points are covered by these lessons:

Topic 16.1

• The meaning of a homologous pair of chromosomes
• The behaviour of chromosomes in animal and plant cells during meiosis
• Genetic variation is caused by crossing over, random assortment and the random fusion of gametes at fertilisation

Topic 16.2

• The meaning of key genetic terms
• Using genetic diagrams to solve problems involving mohohybrid and dihybrid crosses, including those involving autosomal linkage, sex linkage, codominance, multiple alleles and gene interactions
• Use the chi-squared test to test the significance of differences between observed and expected results
• Gene mutations occur by substitution, deletion and insertion and may affect the phenotype

Topic 16.3

• The genetic control of protein production in a prokaryote as shown by the lac operon
• The function of transcription factors in gene expression in eukaryotes
• Gibberellins and DELLA protein repressors

If you would like to sample the quality of the lessons included in this bundle, then download the autosomal linkage and chi-squared test lessons as these have been uploaded for free