Simple Genetics Practice Problems worksheet for learning Mendelian inheritance and Punnett squares.

A worksheet titled "Simple Genetics Practice Problems" with sections for identifying heterozygous and homozygous genotypes, determining phenotypes for flower and eye color, and setting up Punnett squares for round and wrinkled seeds.

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1. For each genotype, indicate whether it is heterozygous (HE) or homozygous (HO)
AA HO
Bb HE
Cc HE
Ee HE
ff HO
GG HO
Ii HE
Jj HE
Kk HE
Mm HE
nn HO
OO HO

2. For each of the genotypes below, determine the phenotype.
Purple flowers are dominant to white. Brown eyes are dominant to blue eyes.
PP Purple
Pp Purple
pp White
BB Brown
Bb Brown
bb Blue

3. Set up the square for each of the crosses listed below. The trait being studied is round seeds (dominant) and wrinkled seeds (recessive)
Rr x rr
| | r | r |
|---|---|---|
| R | Rr | Rr |
| r | rr | rr |

What percentage of the offspring will be round? 50%

Rr x Rr
| | R | r |
|---|---|---|
| R | RR | Rr |
| r | Rr | rr |

What percentage of the offspring will be round? 75%

Parent Tip: Review the logic above to help your child master the concept of genetics practice problems simple worksheet answers.

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