Predicting Traits with Punnett Squares
aligned to 7-ls1-6
Learning Objective
I can use a Punnett square to predict the probability of traits in offspring.
Lesson Flow
Watch Video
Mendelian Genetics and Punnett Squares
Professor Dave Explains
Guided Notes
Key concepts students will learn:
- •
Gregor Mendel studied heredity using pea plants and determined that traits are passed on through discrete units called genes.
- •
The F1 generation is the first filial generation, and the F2 generation is the second filial generation; Mendel observed trait expression, or phenotypes, up to the F2 generation.
- •
A Punnett square uses a grid to show all possible combinations of alleles from two parents; homozygous organisms have identical alleles, while heterozygous organisms have one of each allele.
Practice
12 questions • Multiple choice & Short answer
Exit Ticket
“A pea plant with round seeds (RR) is crossed with a pea plant with wrinkled seeds (rr). Use a Punnett square to determine the probability of the offspring having wrinkled seeds.”
Teacher Guide
Get the complete package:
- Answer keys for all questions
- Differentiation strategies
- Extension activities
- Printable student handouts
