Unit 3 Study Guide
Genetics and Heredity
You will need to know everything on the following topics listed below. On a separate piece of
paper, or out to the side of each topic, please write down everything you know and/or examples
of each to help you study.
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Genetics
Heredity
Gene
Allele
Trait
Recessive
Dominant
Homozygous
Heterozygous
Genotype
Phenotype
Punnett square
DNA – deoxyribonucleic acid
RNA – ribonucleic acid
James Watson
Francis Crick
mRNA
tRNA
Probability in genetics (percentage answers from Punnett Squares)
Selective breeding
Inbreeding
Hybridization
Genetic engineering
Cloning
Mutations
Sex-linked disorders
Happy studying 