This lesson covers the principles of selective breeding using examples: Disease resistance in rice and wheat; Strong maize; Increased milk yield in dairy cattle.

This lesson teaches the principle to calculate allele and genotype frequencies in populations.

This lesson covers how bacteria become resistant to antibiotics as an example of natural selection.

This lesson covers the environmental factors can act as stabilising, disruptive and directional forces of natural selection and how selection, the founder effect, genetic drift and the bottleneck effect may affect allele frequencies in populations.

This lesson covers the factors that can affect the size of populations and the causes of natural selection.

This lessons cover the explanation of the causes of phenotypic variation and the differences between discontinuous and continuation in terms of genetics. The lesson covers the T-Test to compare two difference samples of variation including worked examples.

This lesson covers the differences between structural and regulatory genes, and repressible and inducible enzymes. It progresses to cover genetic control protein production in prokaryotes using the lac operon , and the to describe and explain the use of transcription factors in plants.

Lesson covers the following diseases in terms of genes, the proteins they encode, and the phenotype expressed: Albinism; Sickle Cell Anaemia; Haemophilia; Huntingdon’s Disease. The lesson also cover the role of gibberellin in plants and effects of the two alleles that code for it’s functional enzyme.

This resource builds on previous learning of dihybrid and monohybrid crosses to apply the Chi-square test and to use the Chi-square test to analyse the results of crosses (B-A).

This lesson covers interpretation and construction of genetic diagrams to explain and predict results of dihybrid crosses involving autosomal linkage and epistasis,

This resource covers everything concerning genetics and sex linkage, using genetic diagrams to predict and explain the results of monohybrid crosses.

This lesson covers interpretion and constructing genetic diagrams to predict the results of dihybrid crosses that involve autosomal linkage. Some material has been adapted from other TES contributors and I have included additional material to support.

In this lesson students recall genetic terminology from KS4 and use genetic diagrams to predict and explain the results of monohybrid crosses involving: dominance, multiple alleles and co-dominance. Some the presentation is copied and changed from other teachers, and comes fully supplied with lots of crossing practise.

This is a fully resourced lesson on the process of meiosis with opportunity for students to model all phases in meiosis I and II. Exam practise included in the PPT and also the hard, medium and easy questions from Save My Exams.

This lesson looks at the mode of action of the Venus Fly Trap and how it responds to stimuli. the lesson then progresses into the roles of hormones gibberellins and auxin. Lots of visual diagrams to illustrate concepts. Biofactsheets on plant hormones and CIE specific exam questions and mark scheme provided.

This lesson covers all the learning objectives for plant homeostasis as per the CIE specification. It focuses on the structure and function of stomata, how they are able to open and close during their daily rhythm and the use of abscisic acid and calcium during times of water stress. Lots of visual diagrams outlining the stages of the process. CIE specific exam questions are also included.

This lesson starts with a recall of actin and myosin structure. Then probes further in the the roles of the regulatory proteins troponin and tropomyosin. The structure of the sarcomere is covered including identifying parts on a micrograph. Later, the process of contraction is covered as per the sliding filament theory. the cross bridge cycle is covered in details including the role of calcium, ATP and the regulatory proteins. Exam questions included.

This lesson starts by reviewing the role of the musculoskeletal system and the roles of the skeleton, tendons, ligaments and muscles to bring about movement. Antagonistic muscles and the three types of muscle are also explained, then focusing on straited muscle. Structure of the muscle cell following with details of the myofibrils, T-tubles and sacoplasmic reticulum (covered in more detail in the next lesson. The lesson concludes with an introduction to the roles of actin and myosin, in preparation for the sliding filament theory (next lesson). ).

This lesson revisits KS4 learning of synapses and moves on to the stages involved in the passages of neutrtransmitters across the cleft. Also covered is unidirection, summation and inhibition, followed by the neuromuscular junction and a comparison between both the cholinergic synapses and neuromuscular junctions. The lesson also includes details on how drugs affect neurotransmission (not required for CIE). Lots of visuals and videos to embed learning. Details of the T-tutbule system and sacoplasmic reticulum and included in the next lesson on muscle contraction. Exam questions also included.