A - Unity and Diversity
B - Form and Function
C - Interaction and Interdependence
D - Continuity and Change
D1.1 DNA replication
D1.2 Protein synthesis
D1.3 Mutations and gene editing
D2.1 Cell and nuclear division
D2.2 Gene expression (HL)
D2.3 Water potential
D3.1 Reproduction
D3.2 Inheritance
D3.3 Homeostasis
D4.1 Natural selection
D4.2 Sustainability and change
D4.3 Climate change
View a summary cheatsheet for D3.2 Inheritance
D3.2.1 Production of haploid gametes in parents
D3.2.2 Methods for conducting genetic crosses in flowering plants
D3.2.3 Genotype as the combination of alleles inherited by an organism
D3.2.4 Phenotype
D3.2.5 Effects of dominant and recessive alleles on phenotype
D3.2.6 Phenotypic plasticity
D3.2.7 Phenylketonuria
D3.2.8 Single-nucleotide polymorphisms and multiple alleles in gene pools
D3.2.9 ABO blood groups as an example of multiple alleles
D3.2.10 Incomplete dominance and codominance
D3.2.11 Sex determination in humans and inheritance of genes on sex chromosomes
D3.2.12 Haemophilia as an example of a sex-linked genetic disorder
D3.2.13 Pedigree charts to deduce patterns of inheritance of genetic disorders
D3.2.14 Continuous variation due to polygenic inheritance and/or environmental factors
D3.2.15 Box-and-whisker plots to represent data for a continuous variable such as student height
D3.2.16 Segregation and independent assortment of unlinked genes in meiosis (HL)
D3.2.17 Punnett grids for predicting genotypic and phenotypic ratios in dihybrid crosses (HL)
D3.2.18 Loci of human genes and their polypeptide products (HL)
D3.2.19 Autosomal gene linkage (HL)
D3.2.20 Recombinants in crosses involving two linked or unlinked genes (HL)
D3.2.21 Use of a chi-squared test on data from dihybrid crosses (HL)
