1. February 5, Week # 4 NB-86 Learning Target: I will Homework: Agenda:
complete a Punnett Square to predict genotypes and phenotypes of the offspring.
Homework:
NB-86
Agenda:
Check homework (NB-87 and 88)
Grade homework
Grades
Essential Question:
Why would you use a Punnett Square?

2. Learning Target: I will
Complete a Punnett Square to predict genotypes and phenotypes of offspring.
A genotype is the DNA coding for a trait (EE)
A phenotype is the trait we observe (free earlobes)
A percentage is an amount compared to 100.
A ratio is a relation between 2 numbers

3. Set up the cross: Rr x rr. Round seeds are dominant to wrinkled seeds
Set up the cross: Rr x rr. Round seeds are dominant to wrinkled seeds. What are the genotypes and phenotypes of the parents? rr
Phenotype=
wrinkled seeds
Genotype=
Female gametes
Punnett Square
Parents r r r
round seeds Rr
Offspring
Male gametes
Genotype=
Phenotype= R

4. Phenotype= wrinkled seeds
Set up the cross: Rr x rr. Round seeds are dominant to wrinkled seeds. Next, complete the cross
Female gametes
Phenotype= wrinkled seeds
Genotype= rr
Punnett Square
Parents r r r r r r r
Phenotype= round seeds
Genotype= Rr
Offspring
Male gametes r R r R R

5. Phenotype= wrinkled seeds
Set up the cross: Rr x rr. Round seeds are dominant to wrinkled seeds. What are the phenotypes of the offspring?
Female gametes
Phenotype= wrinkled seeds
Genotype= rr
Punnett Square
Parents r r r r r r r
wrinkled
wrinkled
Phenotype= round seeds
Genotype= Rr
Offspring
Male gametes r R r R R
round
round

6. Phenotype= wrinkled seeds
Set up the cross: Rr x rr. Round seeds are dominant to wrinkled seeds. What percentage of the offspring will be round?
Female gametes
Phenotype= wrinkled seeds
Genotype= rr
Punnett Square
Parents r r r r r r r
wrinkled
wrinkled
¼ x 100= 25%
¼ x 100= 25%
Phenotype= round seeds
Genotype= Rr
Offspring
Male gametes R r R r R
round
round
¼ x 100= 25%
¼ x 100= 25%
25% + 25%= 50% will be round

7. Learning Target: I will
Complete a Punnett Square to predict
genotypes and phenotypes of offspring.
A genotype is
the DNA coding for a trait (EE)
A phenotype is
the trait we observe (free earlobes)
A percentage is
an amount compared to 100.
A ratio is a
relation between 2 numbers

8. Correct HW NB-87 and 88

9. Fake Student Grade
Graph it!

10. Grades Look at your grade.
Fill out the Tracking My Own Learning sheet and graph your grade.

11. Organize Notebooks

12. Fill out the weekly planner. Don’t forget the homework on NB-86!
Essential Question:
Why would you use a Punnett Square?