IB Biology D3.2.2 Genetic crosses in flowering plants
IB Biology D3.2.2 Genetic crosses in flowering plants
Practise using flowering plant crosses to predict genotypes, phenotypes and offspring ratios from parental alleles and dominance evidence.
How this is tested
- construct Punnett grids for plant crosses using a clear allele key
- predict offspring ratios from homozygous, heterozygous and test-cross parents
- explain how F1 and F2 flower colour data support dominance relationships