Hair Color:B: Black b: BlondeHair Texture:W: Wavyw: Straight

BbWw x BbWw

BW

bw

bW

BW

bw

Bw BbWw

BBWw BBww

BbWw

BbWW

bbWW

bbWw

Bbww

bbWw

BBWw

HAPPY TUESDAY BELLWORK: 1. 10 minutes to complete the quiz.

2. Complete the following Dihybrid Cross

Small GroupCHAMPS

F2Computer

THE ANSWERS

Hair Color:B: Black b: BlondeHairTexture:W: Wavyw: Straight

BbWw x BbWw

BW

bw

bW

BW

bw

Bw

BBWW BbWw

BBWw BBww

BbWw

BbWW

bbWW

bbWw

Bbww

bbWw

BBWw

BbWw

Bbww

BbWW

BbWw

bbww

bW

Bw

•What is the PHENOTYPIC RATIO for the following Dihybrid Cross?

9:3:3:1 – Because both parents are Heterozygous.

Collect TodayGenetics Vocabulary Quiz

AssignedPage 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%)

Unit 5 – GeneticsDefinitions Due Thursday (12/3/15)All Parts Due Thursday (12/10/15)

1. Allele2. Co-Dominance3. Dihybrid Cross4. Dominant5. Gene6. Genotype7. Gregor Mendel8. Heterozygous9. Homozygous

10.Hybrid11.Incomplete

Dominance12.Monohybrid13.Multiple Alleles14.Pedigree15.Phenotype16.Polygenic17.Punnett Square

18.Purebred19.Recessive20.Sex-linked Traits

PG 70

Essential Question

How does the genotype change with a dihybrid

cross?Standard

B6F - Predict possible outcomes of genetic combinations such as dihybrid crosses.

PG 82Direct

InstructionCHAMPS

Practice in your notes…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.

Identify

Yy

Rr

Assign

yellowgreen

roundedwrinkled

Match

Male = YyRr Female = yyrr

YyRr X yyrr YR yR

yr

yr

yr

yr

yrYr

YyRr yyRr yyrr

YyRr Yyrr yyRr yyrr

YyRr Yyrr yyRr yyrr

YyRr Yyrr yyRr yyrr

YyrrFOIL

Male = YR Yr yR yr

Female = yr yr yr yr

Genotypic = 1:1:1:1

Phenotypic = 1:1:1:1

Genotypic Ratio YR yR

yr

yr

yr

yr

yrYr

YyRr yyRr yyrr

YyRr Yyrr yyRr yyrr

YyRr Yyrr yyRr yyrr

YyRr Yyrr yyRr yyrr

Yyrr

4 YyRr : 4 Yyrr : 4 yyRr : 4 yyrrOR

1:1:1:1

Phenotypic Ratio YR yR

yr

yr

yr

yr

yrYr

YyRr yyRr yyrr

YyRr Yyrr yyRr yyrr

YyRr Yyrr yyRr yyrr

YyRr Yyrr yyRr yyrr

Yyrr

4 Yellow/Round: 4 Yellow/Wrinkled: 4 Green/Round: 4 Green/WrinkledOR

1:1:1:1

YyRr X yyrr YR yR

yr

yr

yr

yr

yrYr

YyRr yyRr yyrr

YyRr Yyrr yyRr yyrr

YyRr Yyrr yyRr yyrr

YyRr Yyrr yyRr yyrr

YyrrFOIL

Male = YR Yr yR yr

Female = yr yr yr yr

Genotypic = 1:1:1:1

Phenotypic = 1:1:1:1

.

Helpful Information:

Hybrid = HeterozygousPurebred = Homozygous

Two different alleles for a

traitTwo of the

same alleles for a trait

Bikini Bottom Dihybrid CrossesWe will complete the first four questions together!

1.Heterozygous round eyes, blue body:

2.Hybrid eye shape, purebred roundpants:

3.Purebred roundpants, heterozygous long nose:

Rryy

Rrss

ssLl

Bikini Bottom Dihybrid Crosses4. SpongeBob’s aunt & her fiancé A. Aunt = Fiancé =

B. Aunt = Fiancé =

C.

ssllSSLl

sl, sl, sl, slSL, Sl, SL, Sl

SsLl (half) or Ssll (half) sl + SL = SsLl sl + Sl = Ssll

5A. SpongeBob= YySs SpongeSusie = yyss

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

SpongeSusie = ys,ys,ys, ys,

YS yS

ys

ys

ys

ysysYs

YS yS

ys

ys

ys

ysysYs

YySs

yySs yyssYyss

•6a. Patti’s Phenotype (What does she look like?)

Genotype = pptt

6b. Is it possible…?

Genotype = PpTT

6c. Should they get married…?

HW: Q#7 Bikini Bottom PG 82

Essential Question How does the genotype change with a dihybrid

cross?