2-Factor Punnett Square Notes

Slides:

Advertisements

Similar presentations

T. Trimpe Punnett Practice #1 T. Trimpe

Advertisements

The Law of Independent Assortment

THE MONOHYBRID CROSS FOLLOWING THE INHERITANCE OF ONE TRAIT.

Punnett Squares. T=Tall t=short  Example of Phenotype?  Example of Genotype?

Punnett Squares Using a diagram to help predict offspring in genetic crosses.

Punnett Square Practice Problems. Create a punnett square to determine percent probabilities of genotypes and phenotypes of the offspring of a pea plant.

Day 1 In rabbits the allele for black coat color (B) is dominant over the allele for brown coat (b). What is the genotype ratio and phenotype ratio from.

Genetics Chapter 9-2. Parent Generation P1 The 2 organisms that are used to reproduce.

Genetics and Punnett squares

Punnett Squares Step-by-Step Overview. Genetics Problems: Punnett Squares When we have enough information about two parent organisms, we can predict the.

Predicting the Traits of Offspring By Reginald Punnett.

Punnett Square Percentage Practice 1. Complete all squares and percentages. -Work slowly and carefully. -Little mistakes add up! 2. Check your answers.

Crosses involving two traits

REVIEW CHAPTER TEN GENETICS. Number One Write down a genotype that would display the heterozygous trait.

Single-Factor Punnett Square Notes. Punnett Square A diagram that can be used to predict the gene combinations that might result from a cross.

Inheritance of Two Traits: Dihybrid Crosses

History of the Munchkin First noted in 1940’s during London Blitz Cat reappears in Stalingrad in 1953 Pregnant cat found in Rayville LA in 1983.

Mendallian Genetics Words to know:

Punnett Squares 7 & 8. #7- Human Eye color Blue eyes is recessive to brown eyes. Use the letter B. Show the expected children (genotypes and phenotypes)

Punnett Squares. Traits P - Parental Generation Genotype: TT or tt Gametes: T or t F1 – First Filial Generation Genotype: Tt Gametes: T or t F2 – Second.

Write down the red problem: Punnett Square Problem #1 Yellow (Y) is dominant to cream (y) in guinea pigs. – A heterozygous yellow guinea pig (female) is.

Punnett Squares When we know information about the genetic makeup of two parents, we can predict the genetic makeup of any possible offspring created between.

How to a Work Punnett Square A Step by Step Process.

Slide 1 of 21 Copyright Pearson Prentice Hall Biology.

GENETICS PUNNETT SQUARES Tt T t T t. TOOLS TO KNOW A PUNNET SQUARE IS A TOOL USED TO PREDICT THE POSSIBLE GENOTYPES FOR THE OFFSPRING OF TWO KNOWN PARENTS.

T. Trimpe One of SpongeBob’s cousins with hybrid round eyes (Rr) had children with someone who also had hybrid round.

1. What traits do you get from your parents? 2. Which traits don’t you get from your parents?

Monohybrid Problems. General Rules to solving genetic crosses using Punnett Squares. 1. Make key 2. Write Parent Genotypes 3. Perform cross using square.

Short or Tall?. Short Tall Short Tall Short Tall. 3

Punnett Squares.

7 Steps for Solving Monohybrid Cross Problems

Objective: to be able to create punnett squares and predict probabilities of the outcome 11.2.

Monohybrid Crosses.

Mendel, Heredity and Punnett Squares

Dominant vs. Recessive Dominant = trait that is seen over another portrayed as a capital letter Recessive = only seen if with another recessive gene portrayed.

Predicting the Traits of Offspring

Predicting the Traits of Offspring

6 Basic Steps to Completing Single Cross Punnett Squares

How to a Work Punnett Square

B B B b B BB BB B BB Bb BB BB BB Bb Punnett Square A Punnett Square B

Mendel and Heredity.

Notes – Punnett Squares

UNIT: Genetics How do dihybrid crosses show patterns of inheritance?

Start-up for12/11/13 1. Summarize Mendel’s Law of Segregation.

The Punnett Square Rap DJ Jazzy C. The Punnett Square Rap DJ Jazzy C.

Punnett Squares Spring 2018.

Dihybrid Problems Definition – Genetics Problems with two traits tracked at the same time Try This: Given B = brown hair, b = blond hair AND T = Tall.

7.L.4A.3 Develop and use models (Punnett squares) to describe and predict patterns of the inheritance of single genetic traits from parent to offspring.

Genotypes & Phenotypes

Genetics definitions Label each chromosome pair as homozygous dominant, homozygous recessive, or heterozygous with definitions Label dominant.

Punnett Squares.

Pop Quiz with a Twist Mendelian Genetics.

Punnett Square Practice Problems.

Dihybrid Crosses.

Male genotype _______________________

Predicting the Traits of Offspring

Dihybrid Crosses.

Predicting the Traits of Offspring

T. Trimpe Punnett Practice #2 T. Trimpe

Punnett Squares.

Punnett Squares Page 19.

Punnett Square Tutorial

Genotype & Phenotype 1. Introduction

Punnett Squares.

Warm Up 3/4/19.

Punnett Squares.

Predicting the Traits of Offspring

Monohybrid Crosses: Inheritance of single genes

Punnett Practice A cross between 2 heterozygous plants yields 1252 offspring. How many are dominant and how many are recessive?

Presentation transcript:

2-Factor Punnett Square Notes

2-Factor Punnett Square Notes 1-3 1-4 2-3 2-4 1234 1234 BBTt x bbTt bt bT bt bT BT BbTT BbTt BbTT BbTt BbTt Bbtt BbTt Bbtt Bt BbTT BbTt BT BbTT BbTt Bbtt BbTt Bbtt BbTt Bt

Ratios 4 8 4 Genotypic Ratio: Phenotypic Ratio: BBTT: BBTt: BbTT: BbTt: BBtt: Bbtt: bbTT: bbTt: bbtt : : : : : : : : Phenotypic Ratio: Dom/Dom: Dom/Rec: Rec/Dom: Rec/Rec (First 4: Next 2: Next 2: Last 1) 4 8 4 ____12__ : ___4____ : ___0___ : ____0___

2-Factor Punnett Square Notes 1-3 1-4 2-3 2-4 1234 1234 BbTt x BbTt bt BT Bt bT BT BBTT BBTt BbTT BbTt BBTt BBtt BbTt Bbtt Bt BbTT BbTt bT bbTT bbTt bbtt BbTt Bbtt bbTt bt

Answer the following questions using the Punnett Square: a. How many offspring have the genotype, BbTt? 4/16 or 1/4 b. How many offspring have the genotype, bbTt? 2/16 or 1/8 c. How many offspring have the genotype, BBTT? 1/16 d. How many offspring will be Brown-eyed and short? 3/16 e. How many offspring will be Blue-eyed and short? f. How many offspring will be Brown-eyed and tall? 9/16