1. February 3, Week # 4 NB-86 Learning Target: I will Homework: Agenda:
complete a Punnett Square to predict genotypes and phenotypes of the offspring.
Homework:
NB-87 and 88
Agenda:
Check homework (Cornell notes )
Genotype/Phenotype sort
Heredity Simulation (NB-88)
Punnett Squares(NB-87)
Essential Question:
How can you predict traits of offspring?

2. Learning Target: I will
Complete a Punnett Square to predict probability in percentages and ratios of genotypes and phenotypes.
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. Genotype/Phenotype Sort
Look through the words and find GENOTYPE AND PHENOTYPE
Place them at the top of your desk.
Next, go through the remaining words/pictures and decide if they are genotypes or phenotypes.
Place them in the appropriate column.

4. Learning Target: I will
Complete a Punnett Square to predict probability in percentages and ratios of genotypes and phenotypes.
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

5. Heredity Simulation, NB-88
I need 3 volunteers:
1 boy
1 girl
1 person to write on the board

6. Heredity Simulation, NB-88
Look at #5 on the back: Determine the percentage of offspring from your data table.
Percentage= Total # of offspring with trait
Total # of offspring (=8)

7. Punnett Squares: Animation
Mendel figured out how to predict the percentage of offspring with a particular trait. He was the first one to do this and this is why we call him the “father of genetics”

8. Learning Target: I will
Complete a Punnett Square to predict probability in percentages and ratios of genotypes and phenotypes.
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

9. Punnett Squares Practice, NB-87
Purple flowers are dominant to white flowers.
Determine the phenotype of the following: PP Pp pp
PP= purple
Pp= purple
pp= white

10. Punnett Squares Practice, NB-87
Straight hair is dominant to curly.
Determine the genotype of the following:
straight
curly
Straight= SS
Straight= Ss
Curly= ss

11. 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

12. 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

13. 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

14. 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

15. Learning Target: I will
Complete a Punnett Square to predict probability in percentages and ratios of genotypes and phenotypes.
A percentage is
an amount compared to 100.
A ratio is
a relation between 2 numbers
A punnett square is used to
Predict traits in offspring

16. Fake Student Grade
Graph it!

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

18. Organize Notebooks and start working on your homework (NB-87 and 88)

19. Fill out the weekly planner. Don’t forget the homework on NB-87 and 88!