Class Notes 6: Complex Inheritance I. Incomplete Dominance A.When neither trait is dominant. B.Result is a blend of both traits. C.Ex: white (rr) x red(RR)

Slides:

Advertisements

Similar presentations

When Genetics is Not Simple

Advertisements

11.3 Other Patterns of Inheritance

Non-Mendelian Genetics. Mendelian Genetics: Dominant & Recessive Review  One allele is DOMINANT over the other (because the dominant allele can “mask”

Non-Mendelian Genetics

12.2 Complex patterns of inheritance. Complex patterns of inheritance Mendel’s experiments show simple inheritance with recessive and dominant alleles.

Advanced Genetics.

Incomplete Dominance, Codominance and Sex-Linked Traits

Exceptions to Mendel’s laws. 1) Incomplete dominance Some alleles are not completely dominant and the offspring will have a “blending” of the parents.

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

11-3 Exploring Mendelian Genetics Page 270. Think about it…. Mendel wondered if alleles sorted independently… ….for example… “…is the gene for green/yellow.

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

Non-Mendelian Genetics

Non-Mendellian Traits What happens when its not all dominant ?

Genetics Part II Chapter 7.

Complex Inheritance I. VOCAB A. __________ Pattern- The way hereditary traits are passed to offspring 1. _________ Dominance 2. Incomplete Dominance.

Ch. 10.3: Exceptions to Mendel’s Rules of Inheritance Objectives: 1.Describe how alleles interact in intermediate inheritance. 2.Describe inheritance patterns.

Variations to Inheritance Exceptions to Mendel’s Laws.

C. Beyond Dominant and Recessive Alleles 1. Incomplete Dominance a. One allele is not completely dominant over another b. The heterozygous phenotype is.

Complex Patterns of Inheritance

Beyond Dominant and Recessive Alleles Other forms of inheritance.

MORE GENETICS VOCABULARY & EXAMPLES

Codominance "co-" is "together".  Refers to a relationship between two alleles of a gene. Both traits appear in an organism. They do not overpower each.

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

Incomplete Dominance & Codominance Section 11-3 in Book.

Complex Patterns of Inheritance Exceptions to Mendel’s rules: not simple dominant/recessive inheritance.

Dominance and Multiple Allele Notes

REVIEW GENETICS- the study of heredity. Inheritance Traits are specific characteristics inherited from parents Genes are the factors that determine traits.

Genes & Chromosomes. Chromosome Theory of Heredity  The factors (genes) that affect the expression of traits are found on chromosomes.  The chromosome.

11.3 Exceptions to Mendel’s rules

Chapter 6: Introduction to Genetics Section 6-4: Different Types of Inheritance.

Inheritance. Types of Inheritance Dominant-recessive – What we have been doing – One allele is dominant, one is recessive If dominant is present, it is.

Set up Cornell Notes on pg. 75 Topic: 7.2 Patterns of Inheritance

7.4 Human Genetics and Pedigrees Bell Work. 7.4 Human Genetics and Pedigrees Bell Work.

Warm- Up If the pedigree shows the disorder hemophilia caused by a recessive allele (h)… 1.What is the genotype of person 1? 2.What is the genotype of.

Heredity & Punnett Squares. If you look around the room you share some physical characteristic with your classmates. What do you see that you have in.

Complex Methods of Inheritance. Incomplete Dominance No gene is completely dominant resulting in a third phenotype. The third phenotype is usually a mixture.

Unit 5 – Genetics Other forms of inheritance Not all traits are simply dominant or recessive, with only 2 possible alleles.

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.

Beyond Dominant and Recessive Alleles. The whole story... Not all phenotypes are dictated by dominant and recessive alleles (in fact, very few are). Some.

11.3 Other Patterns of Inheritance. Beyond Simple Dominance Not all genes show simple patterns simple patterns of inheritance Most genes have more than.

Chapter 12 When Heredity Rules are Different. Complex Patterns of Heredity Most traits are not simply dominant or recessive Incomplete dominance: when.

OTHER PATTERNS OF INHERITANCE

Incomplete and Codominance. Simple Inheritance Mendel studied simple patterns of inheritance. Mendel studied simple patterns of inheritance. Found that.

Foothill High School Science Department Introduction To Genetics Incomplete Dominance, Codominance, Polygenic Traits & Multiple Alleles.

Various Methods of Genetic Inheritance. Complete Dominance A a A a A a A a A a.

Free PowerPoint Backgrounds Non-Mendelian Genetics.

Co-dominance, Incomplete Dominance, Polygenic Traits, and Multiple Alleles More about Mendel:: The Principle of Independent Assortment: genes for different.

Non-Mendelian Genetics. It’s Complicated Many traits do not follow Mendel’s simple dominant/recessive rules Polygenic Trait: trait can be influenced by.

Test Monday 1/31.  Chromosome: DNA that has been tightly wound together, individuals genetic code  Gene: segment on a chromosome that code for a trait.

Incomplete Dominance Neither allele is dominant over the other

Exceptions to Mendel’s laws

Multiple Alleles & Polygenic Traits

Complex Patterns of Inheritance

Probability of Heredity

Complex Inheritance Some alleles are neither recessive or dominant, and many traits are controlled by multiple alleles or multiple genes. Codominance.

Ex. Red and white flower produce pink offspring

Complex Patterns of Inheritance

Complex Patterns of Inheritance

Complex Patterns of Inheritance

Mendelian Inheritance Non-Mendelian Inheritance

Patterns of Inheritance

OTHER PATTERNS OF INHERITANCE

Exceptions to Mendel’s laws

Complex Inheritance Some alleles are neither recessive or dominant, and many traits are controlled by multiple alleles or multiple genes.

Variations of Inheritance Patterns

Exceptions to Mendel’s Rule

Complete Incomplete Codominance Multiple Alleles Sex-linked Traits

Beyond Dominant and Recessive Alleles

Presentation transcript:

Class Notes 6: Complex Inheritance

I. Incomplete Dominance A.When neither trait is dominant. B.Result is a blend of both traits. C.Ex: white (rr) x red(RR) = pink red(RR) = pink(Rr)

II. Codominance A.When both traits are dominant B.Result is that both traits show Ex: brown x white = brown spotted

III. Multiple Alleles A.When there are more than two alleles of each trait B.Ex: Rabbit fur color has four alleles for one trait

IV. Polygenic Traits A.When more than one gene is in charge, so inheritance rules are very complex. B.Ex: Eye color and skin color

V. Sex-linked trait A.When a gene for a trait is located on the X or Y chromosome. Ex: Colorblindness is on the X chromosome. *Why are males more likely to be colorblind?

The End