B1.1.5 understand that some B1.1.2 describe the genome as the entire characteristics are determined B1.1.4 genetic material of an organism by genes (e.g. dimples), some describe simply how the genome and its are determined by interaction with the environment influence environmental factors (e.g. the development of the phenotype of an scars), and some are organism, including the idea that most determined by a combination of characteristics depend on instructions in genes and the environment (e.g. the genome and are modified by weight) interaction of the organism with its environment. B1.1.6 understand that many B1.2.6 recall that most phenotypic features are characteristics are determined the result of multiple rather than by several genes working single gene inheritance NOTE: learners together (e.g. eye colour) are not expected to describe epistasis and its effects B1.2.1 recall that body cells contain B1.2.8 describe sex determination in humans pairs of chromosomes and that sex cells contain only one chromosome from each pair B1.2.2 understand that chromosomes in B1.1.5 explain the chromosome, gene, a pair carry the same genes in allele, variant, genotype and phenotype the same place, but that there may be different versions of genes called alleles B1.2.3 recall that an individual usually B1.2.2 explain single gene inheritance, including has two alleles for each gene dominant and recessive alleles and use of genetic diagrams B1.2.4 recall that in an individual the B1.2.1 explain the terms gamete, homozygous, two alleles of each gene can be heterozygous, dominant and recessive the same (homozygous) or different (heterozygous) B1.2.5 understand that during sexual NA NA reproduction genes from both  parents come together and produce variation in the offspring B1.2.6 understand that offspring have B1.2.2 explain single gene inheritance, including some similarities to parents dominant and recessive alleles and use because of the combination of of genetic diagrams maternal and paternal alleles in the fertilised egg B1.2.7 understand that different B1.2.3 predict the results of single gene crosses offspring from the same parents can differ from each other because they inherit a different combination of maternal and paternal alleles
B1.1.5 understand that some characteristics are determined by genes (e.g. dimples), some are determined by environmental factors (e.g. scars), and some are determined by a combination of genes and the environment (e.g. weight) B1.1.2 B1.1.4 describe the genome as the entire genetic material of an organism describe simply how the genome and its interaction with the environment influence the development of the phenotype of an organism, including the idea that most characteristics depend on instructions in the genome and are modified by interaction of the organism with its environment. B1.1.6 understand that many characteristics are determined by several genes working together (e.g. eye colour) B1.2.6 recall that most phenotypic features are the result of multiple rather than single gene inheritance NOTE: learners are not expected to describe epistasis and its effects B1.2.1 recall that body cells contain pairs of chromosomes and that sex cells contain only one chromosome from each pair B1.2.8 describe sex determination in humans B1.2.2 understand that chromosomes in a pair carry the same genes in the same place, but that there may be different versions of genes called alleles B1.1.5 explain the chromosome, gene, allele, variant, genotype and phenotype B1.2.3 recall that an individual usually has two alleles for each gene B1.2.2 explain single gene inheritance, including dominant and recessive alleles and use of genetic diagrams B1.2.4 recall that in an individual the two alleles of each gene can be the same (homozygous) or different (heterozygous) B1.2.1 explain the terms gamete, homozygous, heterozygous, dominant and recessive B1.2.5 understand that during sexual reproduction genes from both parents come together and produce variation in the offspring NA NA  B1.2.6 understand that offspring have some similarities to parents because of the combination of maternal and paternal alleles in the fertilised egg B1.2.2 explain single gene inheritance, including dominant and recessive alleles and use of genetic diagrams B1.2.7 understand that different offspring from the same parents can differ from each other because they inherit a different combination of maternal and paternal alleles B1.2.3 predict the results of single gene crosses
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