Different Types of Crosses

Slides:

Advertisements

Similar presentations

Genetics Unit. Genetics = the field of biology devoted to understanding how characteristics are transmitted from parents to offspring Heredity = the transmission.

Advertisements

Incomplete dominance This is when neither allele is dominant.

Genetic Crosses Review

Fundamentals of Genetics (chapter 9). Who was Gregor Mendel? ~An Austrian monk that is considered to be the “father of genetics” ~Used pea plants for.

Co-dominant and Incomplete dominance

Genetics Complex Patterns of Inheritance. Incomplete dominance Neither trait is dominant over the other. A third phenotype is observed that is a combination.

Mendelian Genetics Part II. Dihybrid Crosses A cross involving 2 traits. Law of Independent Assortment: Genes for different traits can segregate independently.

Genotype vs Phenotype Genotype: An organism’s genetic makeup which consists of the alleles that an organism inherits from it’s parents (ex: Ee, EE, or.

Genetics Review. Question # 1 These are sections of chromosomes that code for a trait. A gene.

Different Forms of Genetic Expression Genetic expression is how a gene is “shown” (phenotype) We have been using a model known as complete dominance.

Genes, Heredity & Punnett Squares

PATTERNS OF INHERITANCE. What type of inheritance pattern is represented?

Unit 5- Genetics ► Test Review. Pencil Required ► The test will have 40 questions. ► The first 28 are just like all of the tests we’ve had. ► The last.

Mendel performed cross-pollination in pea plants.

Exploring Mendelian Genetics Section 11-3 Objectives: 7.0 Apply Mendel's law to determine phenotypic and genotypic probabilities of offspring. 7.1 Defining.

Genetics. Objectives  ________’s Experiments and Laws Inheritance  ________ Square to determine genotype and phenotype ratios of a cross  Types of.

Genetics- the study of heredity. Heredity is the passing of characteristics from parent to offspring.

Punnett Squares and Probability. What is a punnett square and why do we use it? What is it?  A grid system for predicting all possible genotypes of offspring.

Genetics Part II Chapter 7.

Variations on Mendel 1. INCOMPLETE DOMINANCE Neither trait is completely dominant over the other Get a BLEND of the two traits The new phenotype is somewhere.

Pedigrees Human Heredity.

GENETICS Why do you look like that?!?. A little background… Gregor Mendel- “Father of Genetics” –Austrian monk and biologist in the mid-1800s –Used pea.

MORE GENETICS VOCABULARY & EXAMPLES

Heredity: The passing of characteristics from parents to offspring.

Bellringer (Week 3). Bellringer cont. Section 12-2 When Heredity Follows Different Rules.

WARM UP # 1/31 Unscramble the words from this chapter Bonus – 1 st 3 people who show me get EC slips! 1. D M E N L E 2. L A L E L 3. M E H C O S R O O.

Genetics review. In a Punnett square problem, what do the capital letters represent?

Dominance and Multiple Allele Notes

MENDELIAN GENETICS Unit Four. Gregor Mendel Discovered principals of genetics Used peas to prove his inheritance theory Before Mendel, people thought.

Dihybrid Crosses and Different Patterns of Inheritance.

11.1 Gregor Mendel  Observed traits in offspring when pea plants were cross pollinated (pp )  A parent that was pure for a trait was crossed with.

Genetic Crosses How to predict the probable genetic makeup and appearance of offspring resulting from specified crosses.

Mendelian Genetics Review Your test on meiosis and Mendelian genetics will be Tuesday, February 18 th !!!

Predict and interpret patterns of inheritance Genetics Unit.

Polygenic Traits: Co-dominance & Incomplete dominance.

Genes that are located on the sex chromosomes are sex-linked genes. In mammals, individuals with two X chromosomes, an XX genotype, are females. Individuals.

Patterns of Inheritance

INCOMPLETE DOMINANCE Part 2. SOME TERMINOLOGY P 1 – Original parents F 1 – First generation F 2 – Second generation P 1 X P 1 = F 1 F 1 X F 1 = F 2.

Special Crosses II: Blood and Sex-Linked What are multiple alleles? Multiple Alleles: when two or more alleles contribute to the phenotype. Example-

Inheritance Patterns Simple dominance, incomplete dominance, codominance, sex-linkage polygenic inheritance.

Notes 20 - Simple Dominance, Incomplete Dominance, and Codominance

Pea In Your Genes.

Multiple Alleles.

Non-Mendelian Genetics

Mendel’s Laws of Heredity

11-3 Exploring Mendelian Genetics & 11-5 Linkage/Gene Maps

Genetics Jeopardy!.

Punnett Squares: Part 2.

Mendelian Traits Non-Mendelian Traits Sex-linked Traits

Mendelian Genetics Chapter 11 Section 3.

Genetics and Heredity 9 Biology.

Multiple Alleles and Sex-Linked Patterns of Inheritance

Beyond Dominant and Recessive Alleles

Pick up your plickers card and worksheet BEFORE the bell rings

The student is expected to: 6A identify components of DNA, and describe how information for specifying the traits of an organism is carried in the DNA.

Mendelian Inheritance Non-Mendelian Inheritance

Predict and interpret patterns of inheritance

What are incomplete dominance and codominance?

Patterns of Inheritance

Incomplete and Codominance

Genetics Test Review.

Genetics Crosses Ch. 9.2 (p )

Dominance and Multiple Alleles

(Where did you get your genes?)

Monday 4/10 Incomplete Dominance: form of inheritance where one allele for a trait is not expressed over the other. Results in a 3rd phenotype in which.

Non Mendelian Genetics

Mendel’s Studies of Traits

Looking at incomplete and codominance

Presentation transcript:

Different Types of Crosses Incomplete Codominance Sex-linked

Review: Simple Mendelian Crosses Monohybrid Dihybrid

Incomplete Dominance Neither allele is dominant. The heterozygous is a MIX of the two genes.

# 1. Heterozygous parents.

# 1. Heterozygous parents.

Co-dominance Both genes are dominant. The heterozygous is BOTH. Notice that BOTH letters are used in upper case!

#2. Mother with dominant red scales x with father with dominant yellow scales. What would a heterozygous child look like? Oh, this is a snake. 

Sex-linked Traits The gene is located on either a part of the Y or X chromosomes that do not overlap with each other. Example: Hemophilia

Sex-linked Traits The gene is located on either a part of the Y or X chromosomes that do not overlap with each other. Example: Hemophilia

Incomplete Dominance and Codominance Interactive Website http://www2.edc.org/weblabs/incompletedom/incompletedominance.html