This fully-resourced lesson has been written to support students to develop a clear understanding of 16 key genetic terms, including the 8 that are detailed in specification point 8.2 (i) of the Edexcel A-level Biology B specification. The 16 terms are genome, gene, chromosome, gene locus, homologous chromosomes, alleles, dominant, recessive, genotype, codominance, multiple alleles, autosomes, sex chromosomes, phenotype, homozygous and heterozygous.
As some of these terms were met at GCSE, this fully-resourced lesson has been designed to include a wide range of activities that build on this prior knowledge and provide clear explanations as to their meanings as well as numerous examples of their use in both questions and exemplary answers. The main task provides the students with an opportunity to apply their understanding by recognising a dominance hierarchy in a multiple alleles characteristic and then calculating a phenotypic ratio when given a completed genetic diagram. Other tasks include prior knowledge checks, discussion points to encourage students to consider the implementation of the genetic terms and quiz competitions to introduce new terms, maintain engagement and to act as an understanding check.
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Topic 8: Origins of genetic variation (Edexcel A-level Biology B)
This lesson bundle contains 10 lessons which are fully-resourced and have been designed to cover the content as detailed in topic 8 of the Edexcel A-level Biology B specification (Origins of genetic variation). Each lesson includes a wide range of activities that will engage and motivate the students whilst covering the following topic 8 specification points: * Mutations are the source of new variations * Random assortment and crossing over in meiosis give rise to new combinations of alleles in gametes * Random fertilisation brings about genetic variation * The meaning of genetic terms * Be able to construct genetic crosses and pedigree diagrams * The inheritance of two non-interacting unlinked genes * Autosomal linkage as the presence of alleles on the same chromosome * Sex linkage on the X chromosome * Use the chi squared test to determine the significance of the difference between observed and expected results * Stabilising and disruptive selection * Genetic drift * Population bottlenecks and the founder effect * Monitoring changes in allele frequencies using the Hardy Weinberg equation If you would like to sample the quality of the lessons in this bundle then download the sex linkage and genetic drift lessons as these have been uploaded for free
£15.00
Bundle
Topic 8.2: Transfer of genetic information (Edexcel A-level Biology B)
Each of the 6 specification points in topic 8.2 of the Edexcel A-level Biology B specification are covered by the 6 lessons included in this bundle: (i) Understanding of the key genetic terms (ii) Be able to construct genetic crosses and pedigree diagrams (iii) Understand the inheritance of two non-interacting unlinked genes (iv) Understand that autosomal linkage results from the presence of alleles on the same chromosome (v) Understand sex linkage on the X chromosome (vi) Be able to use the chi squared test The lessons contain step by step guides that walk students through the key details of this topic, such as the construction of genetic crosses or the calculation of the chi squared value. There are also lots of exam-style questions to challenge the students to apply their understanding and the mark schemes that are embedded in the PowerPoints will allow them to assess their progress. The sex linkage lesson has been uploaded for free if you would like to sample the quality of lessons in this bundle.
£9.50
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