outline the roles of Sutton and Boveri in identifying the importance of chromosomes
process information from secondary sources to construct a model that demonstrates meiosis and the processes of crossing over, segregation of chromosomes and the production of haploid gametes
solve problems involving codominance and sex linkage
identify data sources and perform a first-hand investigation to demonstrate the effect of environment on phenotype
describe the chemical nature of chromosomes and genes
identify that DNA is a double-stranded molecule twisted into a helix with each strand comprised of a sugar-phosphate backbone and attached bases – adenine (A), thymine (T), cytosine (C) and guanine (G) – connected to a complementary strand by pairing the bases, A-T and G-C
explain the relationship between the structure and behaviour of chromosomes during meiosis and the inheritance of genes
explain the role of gamete formation and sexual reproduction in variability of offspring
describe the inheritance of sex-linked genes, and alleles that exhibit co-dominance and explain why these do not produce simple Mendelian ratios
describe the work of Morgan that led to the understanding of sex linkage
explain the relationship between homozygous and heterozygous genotypes and the resulting phenotypes in examples of co-dominance
outline ways in which the environment may affect the expression of a gene in an individual
