Presentation is loading. Please wait.

Presentation is loading. Please wait.

Dihybrid Crosses. Crosses that involve 2 traits 4 x 4 Punnett Square (16 total boxes) 2 traits in peas: R = RoundY = Yellow r = Wrinkledy = Green.

Published byKaren Lucas Modified over 9 years ago

Similar presentations

Presentation on theme: "Dihybrid Crosses. Crosses that involve 2 traits 4 x 4 Punnett Square (16 total boxes) 2 traits in peas: R = RoundY = Yellow r = Wrinkledy = Green."— Presentation transcript:

1 Dihybrid Crosses

2 Crosses that involve 2 traits 4 x 4 Punnett Square (16 total boxes) 2 traits in peas: R = RoundY = Yellow r = Wrinkledy = Green

3 How to Solve First determine the genotypes of the parents: –Heterozygous: RrYy x RrYy –This will usually be given to you in the problem. Determine the combinations of the gametes. Label the top and side of the Punnett Square and fill in all boxes.

4 Determine Gamete Combinations RrYy x RrYy What are the possible combinations that the parents will pass on to the offspring –RY –Ry –rY –ry

5 RRYYRRYyRrYYRrYy RRYyRRyyRrYyRryy RrYYRrYyrrYYrrYy RrYyRryyrrYyrryy RY Ry rY ry RY Ry rY ry Offspring Ratio: 9:3:3:1 9 round, yellow 3 round, green 3 wrinkled, yellow 1 wrinkled, green

Download ppt "Dihybrid Crosses. Crosses that involve 2 traits 4 x 4 Punnett Square (16 total boxes) 2 traits in peas: R = RoundY = Yellow r = Wrinkledy = Green."

Similar presentations

MRs Jackie Principles of Genetics Part II. Terminology Allele- alternative form of a gene for a certain trait. Example seed shape R and r, and flower.

MRs Jackie Principles of Genetics Part II. Terminology Allele- alternative form of a gene for a certain trait. Example seed shape R and r, and flower.
Dihybrid Crosses **Crossing 2 different traits at the same time.

Dihybrid Crosses **Crossing 2 different traits at the same time.
Dihybrid Crosses A2 Biology Meiosis, genetics & gene control A Graham Carmel RC Technology College Darlington.

Dihybrid Crosses A2 Biology Meiosis, genetics & gene control A Graham Carmel RC Technology College Darlington.
Monohybrid Cross. F1 Cross 2 factor test cross Parents= RRYY x rryy Test for Color & Shape RY ry F1 generation Homozygous dominant Homozygoys recessive.

Monohybrid Cross. F1 Cross 2 factor test cross Parents= RRYY x rryy Test for Color & Shape RY ry F1 generation Homozygous dominant Homozygoys recessive.
Exploring Mendelian Genetics

Exploring Mendelian Genetics
Do Now: Anatomy of Punnett Squares

Do Now: Anatomy of Punnett Squares
1 Review What is probability Use Models How are Punnett squares used to predict the outcomes of genetic crosses 2 Review What is independent assortment.

1 Review What is probability Use Models How are Punnett squares used to predict the outcomes of genetic crosses 2 Review What is independent assortment.
Monohybrid & Dihybrid Crosses

Monohybrid & Dihybrid Crosses
Heredity and Mendel. Heredity The passing of parents characteristics onto the offspring Genetics is the branch of biology that studies heredity.

Heredity and Mendel. Heredity The passing of parents characteristics onto the offspring Genetics is the branch of biology that studies heredity.
INCOMPLETE DOMINANCE AND CODOMINANCE 1. INCOMPLETE DOMINANCE  Neither allele has “complete” dominance over the other; heterozygous phenotype is a blend.

INCOMPLETE DOMINANCE AND CODOMINANCE 1. INCOMPLETE DOMINANCE  Neither allele has “complete” dominance over the other; heterozygous phenotype is a blend.
Punnett Square Practice Problems. Create a punnett square to determine percent probabilities of genotypes and phenotypes of the offspring of a pea plant.

Punnett Square Practice Problems. Create a punnett square to determine percent probabilities of genotypes and phenotypes of the offspring of a pea plant.
Heredity and Genetics Part Two Dihybrid Crosses. Review of Monohybrid Crosses Remember, monohybrid crosses involve only ONE trait Practice… In fruit flies,

Heredity and Genetics Part Two Dihybrid Crosses. Review of Monohybrid Crosses Remember, monohybrid crosses involve only ONE trait Practice… In fruit flies,
Basic Genetics *. View video at: https://www.youtube.com/watch?v=YxKFdQo10rE.

Basic Genetics *. View video at:
Crosses involving two traits

Crosses involving two traits
Punnet Squares and Blood Types Mrs. McCarthy October 6, 2015October 6, 2015October 6, 2015.

Punnet Squares and Blood Types Mrs. McCarthy October 6, 2015October 6, 2015October 6, 2015.
Punnett Square Part 2 A punnett square is used to show the possible allele (gene) combinations for the offspring of 2 parents. The four boxes represent.

Punnett Square Part 2 A punnett square is used to show the possible allele (gene) combinations for the offspring of 2 parents. The four boxes represent.
Monohybrid & Dihybrid Crosses Probability and Genetics!

Monohybrid & Dihybrid Crosses Probability and Genetics!
11.2 Applying Mendel’s Principles

11.2 Applying Mendel’s Principles
Dihybrid Crosses. Let’s review So far, we have looked only at different types of monohybrid crosses –the inheritance of only ONE trait at a time –Ex:

Dihybrid Crosses. Let’s review So far, we have looked only at different types of monohybrid crosses –the inheritance of only ONE trait at a time –Ex:
Inheritance of Two Traits: Dihybrid Crosses

Inheritance of Two Traits: Dihybrid Crosses

Similar presentations

Ads by Google