1. Punnett Squares pp

2. Probability: likelihood an event will happen and can be expressed as percentages, fractions, or decimals
Monohybrid cross: cross between individuals that looks at one trait
Punnett square: diagram to predict the probability of inheritance of certain traits

3. Place the parent genotypes in: Aa x Aa
Match letters and fill in squares
Parent I A a A AA Aa
Parent II a Aa aa

4. MENDEL’S RATIOS
Genotype ratio-
1BB: 2Bb: 1bb
1:2:1
Phenotype ratio-
3 Black: 1 Brown
3:1

5. Genotype ratio
2:2 or 1: 1
Phenotype ratio
All black

6. Cross the dominant phenotype with a homozygous recessive (bb)
TEST CROSS
Cross the dominant phenotype with a homozygous recessive (bb)
If you have recessive offspring then the individual must be heterozygous
Parent I
Parent I b b b b B Bb Bb B Bb Bb
Parent II
Parent II B b Bb Bb bb bb