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Genes, inheritance and selection
Revision and exam practice for Genes, inheritance and selection.
15
Objectives
10
Flashcards
10
Questions
90 min
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OcrGcseCombined Science A GatewayGenes, inheritance and selection
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15 objective pages available
Understanding Genetic Terminology1 objectives
- Account for the following terms: gamete, chromosome, gene, allele/variant, dominant, recessive, homozygous, heterozygous, genotype and phenotype.
Understanding the Genome and its Importance1 objectives
- Communicate the key features of the genome as the entire genetic material of an organism.
Genome, Environment, and Phenotype Development1 objectives
- Communicate the key features of the genome, and its interaction with the environment, influence the development of the phenotype of an organism.
Understanding Mutations and Phenotype1 objectives
- Retrieve and apply knowledge of all variants arise from mutations, and that most have no effect on the phenotype, some influence phenotype and a very few determine phenotype.
Haploid and Diploid Cells: Understanding Chromosome Numbers1 objectives
- Account for the terms haploid and diploid.
The Role of Meiosis in Gamete Formation1 objectives
- Account for the role of meiotic cell division in halving the chromosome number to form gametes.
Understanding Single Gene Inheritance1 objectives
- Account for single gene inheritance.
Predicting Single Gene Crosses1 objectives
- Use evidence to predict the results of single gene crosses.
Sex Determination in Humans Through Genetic Crosses1 objectives
- Communicate the key features of sex determination in humans using a genetic cross.
Understanding Polygenic Inheritance: How Multiple Genes Shape Phenotypes1 objectives
- Retrieve and apply knowledge of most phenotypic features are the result of multiple genes rather than single gene inheritance.
Genetic Variation within a Species Population1 objectives
- Develop knowledge and skill in there is usually extensive genetic variation within a population of a species.
Impact of Biological Developments on Classification1 objectives
- Communicate the key features of the impact of developments in biology on classification systems.
Understanding Evolution by Natural Selection1 objectives
- Account for the way evolution occurs through the natural selection of variants that have given rise to phenotypes best suited to their environment.
Understanding Evolution and Natural Selection1 objectives
- Communicate the key features of evolution as a change in the inherited characteristics of a population over time, through a process of natural selection, which may result in the formation of new species.
Understanding the Evidence for Evolution1 objectives
- Communicate the key features of the evidence for evolution.
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Practice preview
- Which statement best explains how antibiotic resistance in bacteria supports the theory of evolution?
- Explain the relationship between genotype, phenotype, and dominant/recessive alleles. Provide an example to illustrate your explanation. [6 marks]
- Which of the following best describes the relationship between a gene and a chromosome?
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