1.  HAPPY TUESDAY  F2 BW bw bW Bw
Computer
BELLWORK: minutes to complete the quiz.
2. Complete the following Dihybrid Cross BW bw bW Bw
BbWw
BBWw
BBww
BbWW
bbWW
bbWw
Bbww
BbWw x BbWw
Hair Color: B: Black b: Blonde
Hair Texture: W: Wavy w: Straight
Small Group
CHAMPS

2. THE ANSWERS BW bw bW Bw bW Bw BbWw x BbWw BBWW BbWw BBWw BBww BbWW
Hair Color: B: Black b: Blonde Bw
Bbww
HairTexture: W: Wavy w: Straight
BbWw
BbWw
bbww

3. What is the PHENOTYPIC RATIO for the following Dihybrid Cross?
9:3:3:1 – Because both parents are Heterozygous.

4. Collect Today Genetics Vocabulary Quiz Assigned Page 80 – Pedigree Practice CORRECTIONS (TOMORROW) Page 70 – Notecard ALL PARTS (Thursday) Most Missed MAKE-UP Quiz (Thursday) Genetics MAKE-UP Quiz (Monday) Page 77 – Family Tree Project Part 2 (Monday) Genetics Exam (Monday) Late Page 78 – Penny Lab (-50%) Page 80 – Pedigree Practice (-30%) Page 74 – Family Tree Project Part 1 (-30%)

5. Unit 5 – Genetics Definitions Due Thursday (12/3/15) All Parts Due Thursday (12/10/15)
PG 70
Allele
Hybrid
Purebred
Co-Dominance
Incomplete Dominance
Recessive
Dihybrid Cross
Sex-linked Traits
Monohybrid
Dominant
Multiple Alleles
Gene
Pedigree
Genotype
Phenotype
Gregor Mendel
Polygenic
Heterozygous
Punnett Square
Homozygous

6. How does the genotype change with a dihybrid cross? Standard
Essential Question
How does the genotype change with a dihybrid cross? Standard
B6F - Predict possible outcomes of genetic combinations such as dihybrid crosses.
PG 82
Direct Instruction
CHAMPS

7. Practice in your notes…
Identify
Assign
Match
In pea plants, yellow seeds (Y) are dominant over green seeds (y), and rounded peas (R) are dominant over wrinkled peas (r). Cross (what do you have to draw?) a plant that is heterozygous for both traits with a plant that is homozygous recessive for both traits. Draw a Punnett square to show all possible offspring, and determine the genotypic and phenotypic ratios. Y
yellow R
rounded y
green r
wrinkled
Male = YyRr
Female = yyrr

8. YyRr X yyrr FOIL Male = YR Yr yR yr Female = yr yr yr yr
Genotypic = 1:1:1:1
Phenotypic = 1:1:1:1

9. Genotypic Ratio 1:1:1:1 YR yR yr Yr YyRr yyRr yyrr YyrrOR
1:1:1:1

10. 4 Yellow/Round: 4 Yellow/Wrinkled: 4 Green/Round: 4 Green/Wrinkled
Phenotypic Ratio YR yR yr Yr
YyRr
yyRr
yyrr
Yyrr
4 Yellow/Round: 4 Yellow/Wrinkled: 4 Green/Round: 4 Green/Wrinkled OR
1:1:1:1

11. YyRr X yyrr FOIL Male = YR Yr yR yr Female = yr yr yr yr
Genotypic = 1:1:1:1
Phenotypic = 1:1:1:1

12. . Helpful Information: Two different alleles for a trait
Hybrid = Heterozygous
Purebred = Homozygous
Two different alleles for a trait
Two of the same alleles for a trait

13. Bikini Bottom Dihybrid Crosses
We will complete the first four questions together!
Heterozygous round eyes, blue body:
Hybrid eye shape, purebred roundpants:
Purebred roundpants, heterozygous long nose:
Rryy
Rrss
ssLl

14. Bikini Bottom Dihybrid Crosses
4. SpongeBob’s aunt & her fiancé
A. Aunt =
Fiancé =
B. Aunt = C.
ssll
SSLl
sl, sl, sl, sl
SL, Sl, SL, Sl
sl + SL = SsLl
sl + Sl = Ssll
SsLl (half) or Ssll (half)

15. 5A. SpongeBob= YySs SpongeSusie = yyss

16. 5B. SpongeBob=
YS,
Ys,
yS,
ys,
SpongeSusie =
ys,
ys,
ys,
ys,

17. YS yS ys Ys

18. YS yS ys Ys
YySs
yySs
yyss
Yyss

19. 6a. Patti’s Phenotype 6b. Is it possible…?
(What does she look like?)
Genotype = pptt
6b. Is it possible…?
Genotype = PpTT
6c. Should they get married…?

20. How does the genotype change with a dihybrid cross?
HW: Q#7 Bikini Bottom
PG 82
Essential Question
How does the genotype change with a dihybrid cross?