This fully-resourced lesson guides students through the use of the Hardy-Weinberg equations to determine the frequency of alleles, genotypes and phenotypes in a population. Both the detailed PowerPoint and differentiated practice questions on a worksheet have been designed to cover point 17.2 (d) of the CIE International A-level Biology specification which states that students should be able to demonstrate and apply their knowledge and understanding of the use of the principle to calculate frequencies in populations.
The lesson begins by looking at the two equations and ensuring that students understand the meaning of each of the terms. The recessive condition, cystic fibrosis, is used as an example so that students can start to apply their knowledge and assess whether they understand which genotypes go with which term. Moving forwards, a step-by-step guide is used to show students how to answer a question. Tips are given during the guide so that common misconceptions and mistakes are addressed immediately. The rest of the lesson gives students the opportunity to apply their knowledge to a set of 3 questions, which have been differentiated so that all abilities are able to access the work and be challenged.
Get this resource as part of a bundle and save up to 42%
A bundle is a package of resources grouped together to teach a particular topic, or a series of lessons, in one place.
Bundle
Topics 17 & 18: Selection, evolution, biodiversity & classification (CIE A-level Biology)
The topics of selection, evolution, biodiversity, classification and conservation are key concepts in Biology, that are regularly assessed in the exams, but are not always that well understood by the students. With this at the forefront of the lesson design, these 16 lesson PowerPoints and their accompanying resources have been intricately planned to cover the detailed content of topics 17 & 18 of the CIE A-level Biology specification through the use of a wide range of tasks to engage and motivate the students. There are plenty of opportunities for the students to assess their current understanding through the completion of exam-style questions and also to check on their prior knowledge by making links to earlier topics. The following specification points are covered by these lessons: Topic 17.1: Variation * The differences between continuous and discontinuous variation * Using the t-test to compare the variation of two different populations * The importance of genetic variation in selection Topic 17.2: Natural and artificial selection * Natural selection * Explain how environmental factors can act as stabilising, disruptive and directional forces of natural selection * Explain how the founder effect and genetic drift may affect allele frequencies in populations * Use the Hardy-Weinberg principle Topic 17.3: Evolution * The molecular evidence that reveals similarities between closely related organisms * Explain how speciation may occur Topic 18.1: Biodiversity * Define the terms species, ecosystem and niche * Explain that biodiversity is considered at three levels * Explain the importance of random sampling in determining the biodiversity of an area * Use suitable methods to assess the distribution and abundance of organisms in a local area * Use the Spearman's rank correlation to analyse relationships between data * Use Simpson's index of diversity Topic 18.2: Classification * The classification of species into taxonomic hierarchy * The characteristic features of the three domains * The characteristic features of the kingdoms * Explain why viruses are not included in the three domain classification Topic 18.3: Conservation * The reasons for the need to maintain biodiversity * Methods of protecting endangered species * The roles of organisations like the WWF and CITES in local and global conservation If you would like to sample the quality of the lessons that are included in this bundle then download the following as these have been shared for free: * Continuous and discontinuous variation * Molecular evidence & evolution * Spearman's rank correlation * WWF, CITES and conservation It is estimated that it will take up to 2 months of A-level Biology teaching time to cover the detail included in these lessons
£22.00
Bundle
Maths in A-level Biology (CIE A-level Biology)
Without doubt, the CIE A-level Biology specification contains a lot of maths calculations and every year, there are a large number of exam questions that require the application of a range of mathematical skills. Therefore, a clear understanding of how and when to apply these skills is closely related to success on this course and the following calculations are covered by the 7 lessons that are included in this bundle: * Using the eyepiece graticule and stage micrometer to measure cells and be familiar with units * Calculating actual sizes of specimens from drawings, photomicrographs and electron micrographs * Using the chi-squared test to determine significance between the observed and expected results of a genetic cross * Use the t-test to compare the variation of two populations * Using the Hardy Weinberg principle to calculate allele, genotype and phenotype frequencies in populations * Use Spearman's rank correlation to analyse relationships between the distribution and abundance of species and abiotic or biotic factors * Using Simpson’s index of diversity to calculate the biodiversity of a habitat All of the lessons contain step by step guides that walk the students through the application of the formulae and there are lots of worked examples and exam-style questions for the students to use to assess understanding
£9.00
Bundle
Topic 17: Selection and evolution (CIE A-level Biology)
This bundle contains 8 detailed and engaging lessons, and together they cover a lot of the key content of topic 17 in the CIE A-level Biology specification. Selection and evolution are key processes in Biology but are not always well understood or well explained by students. With this in mind, these lessons have been designed to support students in making links between the different concepts. The following specification points are covered by these lessons: * The differences between continuous and discontinuous variation * Using the t-test to compare the variation of two different populations * The importance of genetic variation in selection * Natural selection * Environmental factors can act as stabilising, disruptive and directional forces in natural selection * Selection, the founder effect and genetic drift affect allele frequencies in populations * Using the Hardy-Weinberg principle * The molecular evidence that reveals similarities between closely related organisms * Allopatric and sympatric speciation If you would like to sample the quality of lessons in this bundle then download the following lessons as these have been shared for free * continuous and discontinuous variation * molecule evidence and evolution
£12.00
Bundle
Topic 17.2: Natural and artificial selection (CIE A-level Biology)
This bundle of detailed lessons covers points (a), (b), (c) & (d) of topic 17.2 (Natural and artificial selection) of the CIE A-level Biology specification. All of the lesson PowerPoints and accompanying resources contain a wide range of activities including exam-style questions, discussion periods and quick quiz competitions, which will engage and motivate the students whilst covering the detail of each sub-topic. As a result of these lessons, students will understand how random mutations result in variation within species which allows selection pressures to act on the individuals and conveying an advantage to some. The result is an increase in the frequency of some alleles and this change can be calculated using the Hardy-Weinberg principle
£7.00
Something went wrong, please try again later.
This resource hasn't been reviewed yet
To ensure quality for our reviews, only customers who have purchased this resource can review it
Report this resourceto let us know if it violates our terms and conditions.
Our customer service team will review your report and will be in touch.
£3.00