A practical lesson on showing the outcomes of genetic crosses. It defines the key terms, explains dominant and recessive alleles, then works through several flower colour gene diagrams before introducing the Punnett square, with a question on black and white rats to finish.
What this presentation covers
- genotype, phenotype, gamete, allele, dominant and recessive
- how genes control characteristics
- worked gene diagrams for RR x rr, Rr x Rr and Rr x rr
- Punnett squares
- a practice question on coat colour in rats
Level: GCSE
Slides: 15
Format: PowerPoint (.pptx)