genetic probability n.
Download
Skip this Video
Loading SlideShow in 5 Seconds..
Genetic Probability PowerPoint Presentation
Download Presentation
Genetic Probability

Loading in 2 Seconds...

play fullscreen
1 / 51

Genetic Probability - PowerPoint PPT Presentation


  • 109 Views
  • Uploaded on

Genetic Probability. Vanderveer Biology. Gateway. Teachers. Students. Teacher’s Lounge. Learning Goals: Students will have a basic understanding of genetic probability Students will be able to distinguish between a dominant and recessive gene

loader
I am the owner, or an agent authorized to act on behalf of the owner, of the copyrighted work described.
capcha
Download Presentation

PowerPoint Slideshow about 'Genetic Probability' - elita


An Image/Link below is provided (as is) to download presentation

Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author.While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server.


- - - - - - - - - - - - - - - - - - - - - - - - - - E N D - - - - - - - - - - - - - - - - - - - - - - - - - -
Presentation Transcript
genetic probability

Genetic Probability

Vanderveer

Biology

gateway
Gateway

Teachers

Students

teacher s lounge
Teacher’s Lounge

Learning Goals:

  • Students will have a basic understanding of genetic probability
  • Students will be able to distinguish between a dominant and recessive gene
  • Students will be able to distinguish between a genotype and phenotype
teacher s lounge1
Teacher’s Lounge

Learning Objective:

  • Students will be able to use knowledge gained in this activity to answer genetic probability questions with 75% accuracy
students
Students

Procedures:

  • Follow each instructional activity
  • Participate in each practice activity
  • Complete the assessment with 75% accuracy

Good day! My name is GregorMendel and I will be assisting you as you learn about genetic probability.

slide6
Home

Introduction

Monohybrid Cross

Let’s get started!

Dihybrid Cross

Multiplication Rule

Assessment

introduction to genetic probability
Introduction to Genetic Probability

On the following slides you will find basic genetic definitions you need to know, or already know:

genetic probability definitions
Genetic Probability Definitions

Allele: a form of a gene

Dominant: will be expressed in the organisms appearance or physiology; usually represented by an upper case letter

Recessive: will not be expressed in the organisms appearance or physiology unless the individual has 2 copies of the recessive allele; usually represented by a lower case letter

genetic probability definitions continued
Genetic Probability Definitions Continued

Genotype: the genetic composition of an organism

Phenotype: the observable characteristics of an organism

gregor mendel video
Gregor Mendel Video

Oh, that’s me!

section review
Section Review

What is an allele?

a. A chromosome

b. A letter

c. A form of a gene

genetic probability definitions1
Genetic Probability Definitions

Allele: a form of a gene

Dominant: will be expressed in the organisms appearance or physiology; usually represented by an upper case letter

Recessive: will not be expressed in the organisms appearance or physiology unless the individual has 2 copies of the recessive allele; usually represented by a lower case letter

Genotype: the genetic composition of an organism

Phenotype: the observable characteristics of an organism

Back to review question 1

you re right
You’re right! 

Next question

Super!

not quite
Not quite …

Try again!

You can do it!

slide15

2. If a gene is not expressed in the organisms appearance it is:

a. Dominant

b. Recessive

c. An allele

genetic probability definitions2
Genetic Probability Definitions

Allele: a form of a gene

Dominant: will be expressed in the organisms appearance or physiology; usually represented by an upper case letter

Recessive: will not be expressed in the organisms appearance or physiology unless the individual has 2 copies of the recessive allele; usually represented by a lower case letter

Genotype: the genetic composition of an organism

Phenotype: the observable characteristics of an organism

Back to review question 2

you re right1
You’re right! 

Next question

Wonderful!

not quite1
Not quite …

Try again!

It’s okay, try again!

slide19

3. The genetic composition of an organism is its ____________ and the observable characteristics of an organism is its ____________.

a. Phenotype; genotype

b. Genotype; phenotype

c. Genotype; genotype

genetic probability definitions3
Genetic Probability Definitions

Allele: a form of a gene

Dominant: will be expressed in the organisms appearance or physiology; usually represented by an upper case letter

Recessive: will not be expressed in the organisms appearance or physiology unless the individual has 2 copies of the recessive allele; usually represented by a lower case letter

Genotype: the genetic composition of an organism

Phenotype: the observable characteristics of an organism

Back to review question 3

you re right2
You’re right! 

Up Next:

Monohybrid Cross

not quite2
Not quite …

Try again!

Think!

monohybrid cross
Monohybrid Cross

A monohybrid cross is a cross involving a single trait with two alleles.

In example, X is the trait and X, x are the alleles.

monohybrid cross using a punnett square
Monohybrid Cross Using a Punnett Square

Seed color: Y=yellow

y= green

Cross: Yy x YY

Step 1:

Click here

Step 2: Click here

slide25

What is the genotypic ratio? 2 YY: 2 Yy or 1 YY: 1Yy

What is the phenotypic ratio? All yellow

monohybrid cross using a punnett square practice
Monohybrid Cross Using a Punnett Square: Practice

Eye color: B=brown

b= blue

Cross: Bb x Bb

Step 1:

Click here

Step 2: Click here

check your work
Check your work:

What is the genotypic ratio? 1 BB: 2 Bb: 1 bb

What is the phenotypic ratio? 3 brown: 1 blue

dihybrid cross
Dihybrid cross

A dihybrid cross is a cross involving 2 traits with two alleles each.

In example, X and Y are the traits and X, x/ Y, y are the alleles.

dihybrid cross using a punnett square
Dihybrid Cross Using a Punnett Square

Seed color: Y=yellow

y= green

W= Wrinkled

w=round

Cross: YyWw x Yyww

Step 1:

Click here

Step 2: Click here

slide30

What is the genotypic ratio?

2 YYWw: 2 YYww: 4 YyWw: 4 Yyww: 2 yyWw: 2 yyww

reduced to 1 YYWw: 1 YYww: 2 YyWw: 2 Yyww: 1 yyWw: 1 yyww

What is the phenotypic ratio?

6 Yellow wrinkled: 6 Yellow round: 2 green wrinkled: 2 green round

Reduced to 3 yellow wrinkled: 3 yellow round: 1 green wrinkled: 1 green round

dihybrid cross using a punnett square practice
Dihybrid Cross Using a Punnett Square: Practice

Seed color: B=Brown

b= blue

G= brunette

g= blonde

Cross: BBGg x bbgg

Step 1:

Click here

Step 2: Click here

check your work1
Check Your Work:

What is the genotypic ratio?

What is the phenotypic ratio?

check your work2
Check Your Work:

What is the genotypic ratio?

8 BbGg: 8 Bbgg

Reduced to 1 BbGg: 1 Bbgg

What is the phenotypic ratio?

8 Brown/brown: 8 Brown/ blonde

Reduced to 1 Brown/brown: 1 Brown/blonde

multiplication rule
Multiplication Rule

If two events are independent, then the joint probability is:

P(A and B)= P(A) x P(B)

dihybrid cross using multiplication rule
Dihybrid Cross using Multiplication Rule

Seed color: Y=yellow

y= green

W= Wrinkled

w=round

Cross: YyWw x YyWw

What is the probability of getting the genotype YyWw?

(2/4) (2/4)= 4/16= ¼

What is the probability of getting the genotype YYww?

(1/4)(1/4)= 1/16

dihybrid cross using multiplication rule practice
Dihybrid Cross using Multiplication Rule: Practice

Seed color: B=Brown

b= blue

G= brunette

g= blonde

Cross: bbGg x bbGG

What is the probability of getting the genotype bbGg?

What is the probability of getting the genotype bbGG?

check your work3
Check Your Work:

What is the probability of getting the genotype bbGg?

(1)(1/2)= ½

What is the probability of getting the genotype bbGG?

(1)(1/2)= ½

assessment
Assessment

You must answer ¾ of the following questions correctly to complete this activity.

This will be a piece of cake now that we’ve completed the activities!

question 1
Question 1

An allele is:

a. A form of a gene

b. Gregor Mendel’s nickname

c. A chromosome

you re right3
You’re right! 

Next Question

Perfect!

not quite3
Not quite …

Try Again!

You can do it!

question 2
Question 2

Solve using a Punnett Square. What is the phenotypic ratio of the following cross?

Bb x BB

a. 1:1

b. 2:2

c. All are the same

you re right4
You’re right! 

Next Question

Here, here!

not quite4
Not quite …

Try Again!

Ponder this one some more

question 3
Question 3

Solve using a Punnett Square. What is the genotypic ratio of this cross?

YyWw x YyWw

a. 1:1:2:2:1:1

b. 9:3:3:1

c. 12:3:1

you re right5
You’re right! 

Next Question

Good work!

not quite5
Not quite …

Try Again!

You’ve got this!

question 4
Question 4

Solve using the Multiplication Rule. What is the genotypic ratio of the following cross?

Yyww x yyww

a. 1:1

b. 2:2

c. 9:3:3:1

you re right6
You’re right! 

Final Slide

Good job!

not quite6
Not quite …

Try Again!

Think!

almost there
Almost there ...
  • If you have …
    • Followed each instructional activity
    • Participated in each practice activity
    • Completed the assessment with 75% accuracy
  • Then you’re done!

Congratulations!