Patterns of Inheritance. 1. Polygenic traits -Traits controlled by many genes ex. Skin color: 6 genes control the amount of melanin produced more melanin.

Slides:

Advertisements

Similar presentations

Review ch 11 Complex Patterns of Inheritance

Advertisements

Sickle Cell Anemia Blood disorder, inherited disease where a person inherits a mutant gene form each parent for the manufacture of hemoglobin. Red blood.

Andrew Novoa and Thea De Guzman 2/1/10 Per. 3

Section 2: Complex Patterns of Inheritance

LESSON TOPIC   COMPLEX PATTERNS OF INHERITANCE.

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

 Genes are found on the X AND Y chromosomes.  Genes that are carried on the sex chromosomes are called sex linked genes.

Chapter 11 Human Heredity.

Biology 8.4 Complex Patterns of Heredity

Let’s think about it… What are autosomes? What are sex chromosomes?

Unit 6: Inheritance Part 2: Complex Patterns of Inheritance.

Human Genetics: Patterns of Inheritance for Human Traits.

Sex-linked Genetic Disorders & Autosomal Disorders Packet #41 Chapter #14.

10.3 Polygenic Inheritance (and More…) Learning Targets: I can define and give examples of polygenic inheritance. I can review blood groups, pedigrees,

Section 1: Human Inheritance 7.2 A typical cell of any organism contains genetic instructions that specify its traits. Those traits may be modified by.

Patterns of Heredity Can Be Complex

Section 4: Complex Patterns of Heredity

Human Genetics: Patterns of Inheritance for Human Traits.

MORE GENETICS VOCABULARY & EXAMPLES

Do Now Incomplete or Codominance? Human Genetics: Patterns of Inheritance for Human Traits.

Types of Inheritances Pp 237, Single gene traits controlled by only one gene - complete, incomplete, and codominant EX. Huntington Disease (D/d),

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

Complex Inheritance Patterns. 1.Incomplete Dominance – phenotype of heterozygous is intermediate of the 2 homozygous phenotypes -results in the blending.

Chapter 7 Extending Mendelian Genetics. Karyotype = picture of all chromos in cell They can show a change in chromos whether autosomal or sex-linked.

COMPLEX PATTERNS OF HEREDITY Polygenic Traits: traits influenced by several genes ex: human eye color, height, weight, hair color.

Non Mendelian Genetics Patterns of inheritance that aren’t simply dominant or recessive.

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

Understanding Inheritance Main Idea: The interactions among alleles, genes, and the environment determine an organism’s traits.

11.2 Assessment Answers.

Chapter 6 - Section 1 Human Inheritance. Vocabulary Multiple Alleles – three or more forms of a gene that code for a single trait Sex Chromosomes – a.

Chapter 12: Inheritance Patterns and Human Genetics.

Exceptions to Mendel’s laws Variations in Genetics.

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

EQ: WHAT ARE THE DIFFERENT TYPES OF DOMINANCE AND HOW DO THEY AFFECT PHENOTYPES? Types of Dominance.

Multiple Alleles, Polygenic Traits, and Pedigrees Wednesday, October 25, 2011.

Genetic Disorders Cystic Fibrosis

Human Heredity. 1. condition : gender symptoms : male or female genetic cause : sex chromosomes genotypes/phenotypes : XX = female XY = male.

Non Mendelan Genetics Foldable. Fold your paper so you have 2 flaps opposite each other Next cut four divisions on each side. You should have a total.

1 Chapter 12 College Prep Biology Patterns of Heredity & Human Genetics.

11-3 Heredity Following Different Rules

Chapter 11 Human Heredity.

Single Gene Inheritance

Are there exceptions to mendel’s ideas of dominant and recessive?

Beyond Dominant and Recessive Alleles

Section 2: Complex Patterns of Inheritance

Beyond Mendel Mendel discovered that in some traits, one allele is dominant over the other allele (we call this simple dominance) However, many traits.

12.3 Complex inheritance in Humans

Human Genetics: Patterns of Inheritance for Human Traits

Exceptions to Mendel’s laws

Non Mendelian Genetics Foldable

Complex Patterns of Inheritance (11.2)

Sex-linked Genetic Disorders & Autosomal Disorders

Understanding Inheritance

Understanding Inheritance

Agenda 4/10 Mild, medium, spicy warm up

Alternate Patterns of Inheritance

Complex Patterns of Inheritance (11.2)

Chapter 12.2-When Heredity Follows Different Rules

Mendelian Inheritance Non-Mendelian Inheritance

Patterns of Inheritance

Exceptions to Mendel’s laws

Non-Mendelian Genetics

Sec 11.2, Complex Patterns of Inheritance

KEY CONCEPT Human inheritance patterns are more complex.

Extending Mendelian Genetics

Complex Patterns of Inheritance

Variations of Inheritance Patterns

12.4 Beyond Medelian Heredity

Patterns of Heredity & Human Genetics

Exceptions to Mendel’s Rule

Presentation transcript:

Patterns of Inheritance

1. Polygenic traits -Traits controlled by many genes ex. Skin color: 6 genes control the amount of melanin produced more melanin means darker skin color

2. Complex Characters- traits affected by the environment as well as genetics Exposure to sunlight : skin color Nutrition: Height, Diabetes, Heart disease Soil type: Hydrangea flowers are blue if grown in acidic soil

3. Multiple Allele Traits Ex: Human Blood types Alleles : A, B, O

4. Sex linked Traits – on the x chromosome Ex: colorblindness Hemophilia

6. Sex influenced traits- influenced by sex hormones Ex: baldness – influenced by testosterone dominant in men recessive in women

7. Incomplete Dominance Ex: Sickle Cell Trait Point mutation on chromosome 11 causes improperly formed hemoglobin. This causes sickle shaped red blood cells which cannot carry oxygen properly and may clog capillaries

Genotypephenotype SS Normal red blood cells AAHas sickle cell disease ASis a carrier of sickle cell, has few symptoms, is resistant to malaria

symptoms Pain in legs, elsewhere Weakness Fatigue may lead to tissue and organ damage