1. Warm Up
Put bug lab on desk to be collected – turn in drawing and chart Write down and answer the following question in your notebook. 1. T = tall t = short A. What are the 2 possible genotypes of a tall person? B. What is the phenotype of a person with a tt genotype?

2. 1. T = tall t = short
What are the 2 possible genotypes of a tall person? >
TT or Tt
B. What is the phenotype of a person with a tt genotype?
Short

3. Notebook
Table of Contents March 11 Punnett Squares 7.L.2.2 Notes March 11 Punnett Squares How does a Punnett Square help determine patterns of heredity?

4. Vocab Review Dominant Allele - represented using a capital letter.
Recessive Allele – represented using a lowercase letter
Genotype – combinations of letters
Phenotype – physical characteristics you can see

5. Vocab Review
Heterozygous – genotype with one capital and one lowercase letter
Homozygous – genotype with 2 capitals or 2 lowercase letters

6. 7.L.2.2 Vocabulary
Punnett Square > A diagram that shows how parent’s alleles might combine in offspring
Used to determine the potential genotypes and phenotypes of offspring
Each box = 25% or 1/4

8. Ratio – two numbers that show the relationship between two amounts
Ratio – two numbers that show the relationship between two amounts * Written as number : number 5:4 Percentage – a ratio that compares a number to 100. ex – 50: 100 = 50% Probability – percentage/chance that something will happen. The probability of having an offspring with brown hair is 75% or there is a 75% chance

9. Steps to making a Punnett Square

10. How to complete a Punnett Square
Step 1 – draw the 4 square Step 2 – put parent allele’s on the outside of Punnett square. dad – top mom – left side
Male / Father alleles
B b
Female / Mom Alleles b

11. B b B b Step 3. Distribute parent alleles Bring dad alleles down
Male / Father alleles
B b
Step 3. Distribute parent alleles
Bring dad alleles down
Bring mom alleles across
Step 4. Determine ratio and probability/percentage
- Look at genotypes inside
Bb = 2 bb = 2
Ratio = 2:2
50% chance of brown eyes
50% chance of blue eyes
Female / Mom Alleles b B b b b B b b b

12. http://www. youtube. com/watch

13. B b
B B
B b B b
B b
b b

14. A homozygous dominant red rose crosses with a homozygous recessive pink rose. What are the possible offspring genotype and phenotypes?
1. Homozygous Dominant Red = RR
Homozygous Recessive Pink = rr
Genotypes:
4 will be Rr
Phenotypes
100% of offspring be red
R R
Rr Rr
Rr Rr r

15. Two heterozygous black cats (white cats are recessive) are crossed.
Heterozygous black = Bb
Genotypes
25% = BB
50% = Bb
25% = bb
Phenotypes
75% = black
25% = white
B b
BB Bb
Bb bb B b

16. Let’s Practice Punnett Square Worksheet Punnett Practice #1
Complete worksheets on your own
When finished with 1 (both sides) check answers at solution station – do not bring pens or pencils!!

17. A C B D Test Corrections 14 – 21
If marked wrong or ½, use notes to find correct answer. Write on separate sheet and turn in with test/
Due Wednesday
Extra Credit
Metaphase
Prophase
Telophase / Cytokinesis
Interphase

18. Warm Up Put HW on desk (Punnett Square Worksheet)
WRITE ALL PARTS OF QUESTION
A homozygous dominant white dog
crosses with a heterozygous
white dog.
What are the possible genotypes?
What are the offspring phenotypes?

19. A homozygous dominant white dog crosses with a heterozygous white dog.
Homozygous Dominant = HH
Heterozygous = Hh
Genotypes = 2 HH, 2 Hh
Phenotypes = 100% white
H H
H HH HH
h Hh Hh

20. Exit Ticket Review
A heterozygous male is crossed with a homozygous recessive female (use the letter t)
Heterozygous = Tt
Homozygous recessive = tt
Genotypes = 2 Tt, 2 tt
Phenotypes =
50% tall, 50% short
T t t
Tt tt
Tt tt

21. HW Review

23. Homozygous Dominant = 2 capital
Heterozygous = 1 capital , 1 lowercase

24. Heterozygous = 1 capital, 1 lower case

25. Homozygous tall = 2 capitals
Heterozygous = 1 capital, 1 lowercase

26. Heterozygous white = 1 capital, 1 lower case
Homozygous black = 2 lowercase

27. Today’s Agenda Monster Punnett Squares Bikini Bottom Genetics
Punnett Square Practice
Complete front and back of each sheet
Raise hand for answer sheet when finished
Heterozygous = different
Homozygous = same
Dominant = Capital
Recessive = Lowercase
Pure = homozygous
Hybrid = Heterozygous

28. Invent-An-Alien! Possible Phenotypes:
S/s: Square head (S) or Round (s)
E/e: Three eyes (E) or Five eyes (e)
H/h: Horns (H) or No horns (h)
G/g: Circle nose (G) or Triangle nose (g)
A/a: Two antennae (A) or Three antennae (a)
Y/y: Two eyebrows (Y) or Four eyebrows (y)
T/t: Sharp teeth (T) or Flat teeth (t)
Use these seven characteristics to invent and draw your alien.
Trade aliens with a partner.
On the back of your partner’s paper, draw two chromosomes, each with seven alleles. Label each chromosome with the alien’s alleles!

29. Warm Up Put homework packet on desk
Complete Punnett Square Practice Handout (both sides) – no talking

30. Yesterday’s Behavior
Test = 2 people got above a 70, no one got an A or B
Your behavior hurts your overall grade
No more warnings – automatic consequences

31. A C B D Green Grade = test grade Blue = Class Grade Test Corrections
14 – 21
If marked wrong or ½, use notes to find correct answer. Write on separate sheet and turn in with test/
Due Thursday
Extra Credit
Metaphase
Prophase
Telophase / Cytokinesis
Interphase

32. Warm Up Put HW packet on desk
Write & Answer following question in your notebook
A homozygous recessive frog with spots is crossed with a heterozygous female with no spots. What is the probability of their offspring having spots? Create a Punnett square to solve

33. Of their offspring having spots
A homozygous recessive frog with spots is crossed with a heterozygous female with no spots. What is the probability of their offspring having spots?
Male = ff
Female = Ff
Spots = F
There is a 50% chance
Of their offspring having
spots
f f
F Ff Ff
f ff ff

34. Yesterday’s Exit
A heterozygous purple monster crosses with a homozygous recessive blue monster
What are the two parent genotypes?
Pp pp
B. What are the possible offspring genotypes?
2 Pp 2pp
C. What are the possible offspring phenotypes?
50% purple, 50% blue
P p p P
Pp pp

39. 6.

40. 7. 8.

43. 2. True
3. False
4. C. Genotypes

44. E I H J C D B F G A

45. Warm Up Take out all Leveled Curriculum work from yesterday
Begin silently working

46. Leveled Curriculum Due – End of class Today
Level C – Complete 2 with * and 1 of choice (3)
Level B - Complete 2 with * and 1 of choice (3)
Level A – Complete the 1 assignment
Directions
Test Grade
Work independently
Copying = 0 for both people
When you finish a level raise your hand to get signature

47. Alien Genetics
Select ONE male and ONE female alien from front page, circle them
Determine parent genotypes for each trait (write under directions)
Skin Color - Eye Color - Height - Superpower - Arms
Recessive = 2 lower case
Dominant = you choose 2 capital or heterozygous
3. Complete Punnett Squares
4. Under Punnett Square write possible offspring phenotypes
5. Draw baby on back using traits from Punnett Squares
6. Explain the traits of your baby for EACH of the traits you made in the Punnett Squares

48. Warm Up Put packet from Friday on your desk
Write down the words below and an example of each into your notebook (use the letter t)
Homozygous Dominant
Homozygous Recessive
Heterozygous
Phenotype
Genotype
Inherited Trait
Acquired Trait
Allele

49. Homozygous Dominant > TT
Homozygous Recessive > tt
Heterozygous > Tt
Phenotype > characteristic – hair color
Genotype > combinations of alleles/letters in our genes – tt
Inherited Trait > something passed down ,eye color
Acquired Trait > something you change or learn, attitude
Allele > combinations of the same trait or gene represented by a letter T

50. height, hair texture, freckles
T, H, t, h
Combinations of alleles
Physical characteristics you can see
Tt, Hh, Ff
A capital letter
A lowercase letter
tt, hh, ff ff Tt

51. 11. rr
12. Short
13. BB, Bb, bb
14. HH = Right hand Hh= right hand hh = left
15. Step 1 – Red: R White: r
Step 2 – RR Rr rr
RR = Red
Rr = red
rr = white

52. 16. Smooth: H Fluffy: h
Step 2. HH Hh hh
Step 3. HH = Smooth
Hh = Smooth
hh = fluffy

53. Leprechaun Genetics
Luke = RR
Lola = Rr
100%
R R
R RR RR
r Rr Rr

54. Luke = Gg Lola = Gg
Green Eyes = 75%
G g
G Gg Gg
g Gg gg

55. Luke: Ll
Lola : ll
50%
L l
l Ll ll

56. Luke’s Dad – FF Luke’s Mom – FF Lola’s Dad - ff Lola’ Mom - ff F F
F FF FF
F FF FF
f f
f ff ff
f ff ff

57. Luke - FF
Lola – ff
Freckles = 100%
F F
f Ff Ff
f Ff Ff

58. Luke = Ww
Lola = Ww
50% Ww
25% ww
25% WW
W w
W WW Ww
w Ww ww

59. Hair – Red hair
Eyes – green eyes
Skin Color- light skin
Freckles - freckles
Widows Peak –has widows peak

60. 1A. Parent 1 – WW Parent 2 – Ww short whiskers = 0% W W W WW WW

61. 1B
Short = 0%
W W
w Ww Ww
w Ww Ww

62. PDF

63. Part A
1. Dominant = capital Letter
2. Recessive = lower case
3. Punnett Square = Diagram used to determine possible offspring genotypes and phenotypes
Skill Challenge
Heterozygous TT tt Tt
b. ¼
c. 2/4 or ½

64. Quiz Eyes on your own paper
No talking – stay in seat – raise your hand if you need something
*when finished, raise hand
Work on something silently (read)
#4 – Hairy ears : recessive
Women = heterozygous