Predicting Traits with Punnett Squares
Grade 7th Grade · Science · 60 min· 7-ls1-6
What's Included
Learning Objective
I can use a Punnett square to predict the probability of traits in offspring.
Warm-Up Video
Professor Dave Explains · 14:34
Mendelian Genetics and Punnett Squares
Guided Notes
3 key concepts
- 1
Gregor Mendel studied heredity using pea plants and determined that traits are passed on through discrete units called genes.
- 2
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.
- 3
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 Questions
12 questions · Multiple choice & Short answer
Exit Ticket
Quick comprehension check
“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.”
Complete Lesson Package
Get all 3 ready-to-use resources:
