Year Twelve |
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Module 1 |
Module 3 |
Module 4 |
The cell |
The species |
Ecosystems |
1.5 provide evidence that the continued survival of the cell depends on the presence of the nucleus. 1.11 describe the structure of DNA at the level of major structural components (sugar, phosphate and nitrogenous bases) and state that the sequence of nitrogenous bases stores genetic information. 1.12 describe mitosis in terms of DNA replication and division of chromatids and their outcomes (no detail required). 1.13 explain the need for DNA replication in the cell cycle. Option
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3.2 give a functional definition of a gene and explain the relationship between genes and chromosomes. 3.3 define the terms ‘allele’, ‘homologous chromosomes’, ‘haploid’ and ‘diploid’ numbers. 3.4 state that in reproduction, genes may be passed on from parents to offspring and that aspects of the reproductive processes determine the inheritance patterns. 3.5 describe the process of meiosis with reference t pairing of homologous chromosomes, attachment of chromosomes to spindle fibres, halving of chromosome number and effect on variation in gametes (names of phases not required). 3.6 contrast the effects of sexual and asexual reproduction on heritable variation in species and relate this to survival in a changing or stable environment. 3.8 distinguish between phenotypes and genotypes (homozygous and heterozygous), and describe how the expression of an allele may be affected by the presence of an alternative allele carried on the homologous chromosome. 3.9 predict the frequencies of genotypes and phenotypes in offspring from monohybrid crosses. Option
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Option
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Module 2 |
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The organism |
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Option
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