Predicting Traits with Punnett Squares
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Objective
I can use a Punnett square to predict the probability of traits in offspring.
Part 1 of 4
Warm-up video
Professor Dave Explains · 14:34Vetted channel
We don't generate video — this one is by Professor Dave Explains on YouTube. The practice questions and exit ticket below were drafted by AI for this objective, and every question is editable in the teacher guide.
Part 2 of 4
Key concepts
3 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.
Part 3 of 4
Practice
12 questions
What is the purpose of a Punnett square?
In genetics, what does the term 'allele' refer to?
Part 4 of 4
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.”
Sample answer included in the free materials
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