Biology D3.2.1

D3.2.1 Production of haploid gametes in parents

Biology D3.2.2

D3.2.2 Methods for conducting genetic crosses in flowering plants

Biology D3.2.3

D3.2.3 Genotype as the combination of alleles inherited by an organism

Biology D3.2.4

D3.2.4 Phenotype

Biology D3.2.5

D3.2.5 Effects of dominant and recessive alleles on phenotype

Biology D3.2.6

D3.2.6 Phenotypic plasticity

Biology D3.2.7

D3.2.7 Phenylketonuria

Biology D3.2.8

D3.2.8 Single-nucleotide polymorphisms and multiple alleles in gene pools

Biology D3.2.9

D3.2.9 ABO blood groups as an example of multiple alleles

Biology D3.2.10

D3.2.10 Incomplete dominance and codominance

Biology D3.2.11

D3.2.11 Sex determination in humans and inheritance of genes on sex chromosomes

Biology D3.2.12

D3.2.12 Haemophilia as an example of a sex-linked genetic disorder

Biology D3.2.13

D3.2.13 Pedigree charts to deduce patterns of inheritance of genetic disorders

Biology D3.2.14

D3.2.14 Continuous variation due to polygenic inheritance and/or environmental factors

Biology D3.2.15

D3.2.15 Box-and-whisker plots to represent data for a continuous variable such as student height

Biology D3.2.16

D3.2.16 Segregation and independent assortment of unlinked genes in meiosis (HL)

Biology D3.2.17

D3.2.17 Punnett grids for predicting genotypic and phenotypic ratios in dihybrid crosses (HL)

Biology D3.2.18

D3.2.18 Loci of human genes and their polypeptide products (HL)

Biology D3.2.19

D3.2.19 Autosomal gene linkage (HL)

Biology D3.2.20

D3.2.20 Recombinants in crosses involving two linked or unlinked genes (HL)

Biology D3.2.21

D3.2.21 Use of a chi-squared test on data from dihybrid crosses (HL)