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

Slides:

Advertisements

Similar presentations

When Genetics is Not Simple

Advertisements

Complex Patterns of Heredity

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

Incomplete dominance This is when neither allele is dominant.

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

Exceptions to the Rule of Dominance & Recessiveness

Patterns of Heredity and Human Genetics Chapter 11.

Genetics. Test cross Individual of unknown genotype is crossed with a homozygous recessive individual Determine the genotype of an individual whose phenotype.

Human Genetics Chapter 12.

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

Can heredity follow different rules?

State Standard 2C. Using Mendel’s laws, explain the role of meiosis in reproductive variability. 2D. Describe the relationships between changes in DNA.

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

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.

Incomplete Dominance & Codominance Section 11-3 in Book.

7.2 Dominance & Blood Type.

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

Non-Mendelian Genetics

BEYOND MENDEL’S LAWS Heredity. Incomplete Dominance Review:  Inherited traits were either dominant or recessive  The dominant allele in an individual.

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.

1/6/12 Objective: What factors influence typical inheritance? Do Now: -Take out Cyclops problem.

11.2 Assessment Answers.

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

Exceptions to Mendel’s Laws: Co-dominance Incomplete Dominance Multiple Alleles.

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)

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

Say What!?!?. One allele is not completely dominant over the other. - heterozygous phenotype always intermediate Ex. A cross between a recessive white.

Complex Patterns of Inheritance. 1.Incomplete dominance 2.Codominance 3.Multiple alleles 4.Sex linked inheritance 5.Polygenic inheritance.

Free PowerPoint Backgrounds Non-Mendelian Genetics.

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.

04/10/12 1.What does heterozygous mean? 2.What does homozygous mean? 3.What is a phenotype? 4.What is a genotype? 5.What three genotypes can an organism.

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.

Exceptions to the Rule of Dominance & Recessiveness Incomplete Dominance, Codominance, & Sex-Linked Traits.

Incomplete Dominance Neither allele is dominant over the other

Non-Mendelian Genetics

Notes 20 - Simple Dominance, Incomplete Dominance, and Codominance

Karyotyping BSC 2010L.

Ch. 9 Complex Inheritance

Ch. 9 Complex Inheritance

IN 147 Headings Vocabulary Important Info

Exceptions to Mendelian Inheritance

Headings Vocabulary Important Info

Exceptions to the Rule of Dominance & Recessiveness

Solving Crosses Biology I Fall 2015.

Punnett Squares: Part 2.

Ex. Red and white flower produce pink offspring

Complex Patterns of Inheritance

Complex Patterns of Inheritance

Solving Crosses Biology I September 2009.

Patterns of Inheritance

When Heredity Follows Different Rules

Modes of inheritance There are more modes of inheritance than simple dominant-recessive with only 2 alleles.

Incomplete Dominance Incomplete Dominance: The heterozygous genotype produces a phenoytype that falls in between the dominant trait and the recessive trait.

4/11/ 12 Bell Ringer What does incomplete dominance mean?

Incomplete Dominance & Codominance.

Incomplete Dominance & Codominance.

Patterns of Inheritance

Non-Mendelian Genetics

Variations of Inheritance Patterns

Incomplete dominance.

Incomplete Dominance & Codominance.

Incomplete Dominance Incomplete Dominance: The heterozygous genotype produces a phenotype that falls in between the dominant trait and the recessive trait.

12.4 Beyond Medelian Heredity

Variations on Mendel’s Themes

Exceptions to Mendel’s Rule

Looking at incomplete and codominance

Presentation transcript:

Bellringer (Week 3)

Bellringer cont.

Section 12-2 When Heredity Follows Different Rules

Incomplete Dominance The phenotype of the heterozygote is in between the two homozygotes. RR – Red flowers rr – white flowers Rr – pink flowers

Codominance Causes the phenotype of both homozygotes to be produced in heterozygous individuals. Ex: Checkered chickens

Multiple Alleles Traits controlled by more than two alleles Coat color in rabbits C (dark grey) – dominant to all other alleles C ch (Chinchilla) – dominant to Himalayan and white C h (himalayan) – dominant to white c (white) - recessive

Multiple Alleles Continued Blood Type in Humans I A I A or I A i – A I B I B or I B i – B I A I B – AB ii - O

Sex-linked Inheritance Traits controlled by genes located on the sex chromosome (X). Ex: Colorblindness and hemophilia