- bacillus
- bacteria
- bacteriology
- biochemist
- chromosome
- clone
- clone
- cross
- crossbreed
- crossbreed
- cross-fertilize
- culture
- cytology
- DNA
- dominant
- double helix
- gamete
- gene
- genetic
- genetically modified
- genetic code
- genetic engineering
- genetics
- genome
- genotype
- germ
- hereditary
- heredity
- hybrid
- identical twin
- incubate
- inheritance
- insecticide
- microbe
- MRSA
- mutant
- mutate
- mutation
- nucleic acid
- parthenogenesis
- pasteurized
- pathogen
- pesticide
- plasma
- protozoan
- ptomaine
- recessive
- RNA
- salmonella
- superbug
- toxin
- transgenic
- virus
- weedkiller
- X chromosome
- Y chromosome
- zygote
