Patterns of Inheritance. Gregor Mendel “Father” of genetics Mid 1800s Austrian monk Studied math...

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Patterns of Inheritance

Transcript of Patterns of Inheritance. Gregor Mendel “Father” of genetics Mid 1800s Austrian monk Studied math...

Page 1: Patterns of Inheritance. Gregor Mendel “Father” of genetics Mid 1800s Austrian monk Studied math and science in Vienna Taught high school Tended to the.

Patterns of Inheritance

Page 2: Patterns of Inheritance. Gregor Mendel “Father” of genetics Mid 1800s Austrian monk Studied math and science in Vienna Taught high school Tended to the.

Gregor Mendel“Father” of geneticsMid 1800sAustrian monkStudied math and science in

ViennaTaught high schoolTended to the monastery gardenConducted his genetic studies in

pea plants

Page 3: Patterns of Inheritance. Gregor Mendel “Father” of genetics Mid 1800s Austrian monk Studied math and science in Vienna Taught high school Tended to the.

Anatomy of a Flower

Page 4: Patterns of Inheritance. Gregor Mendel “Father” of genetics Mid 1800s Austrian monk Studied math and science in Vienna Taught high school Tended to the.

True-breeding StrainsMendel used “self-pollination” to

obtain true breeders

Page 5: Patterns of Inheritance. Gregor Mendel “Father” of genetics Mid 1800s Austrian monk Studied math and science in Vienna Taught high school Tended to the.

Cross-Pollination

Page 6: Patterns of Inheritance. Gregor Mendel “Father” of genetics Mid 1800s Austrian monk Studied math and science in Vienna Taught high school Tended to the.

Characteristics vs. Traits

CharacteristicPlant height

Pea color

Flower color

Pea shape

Flower position

TraitTall, short

Yellow, green

Purple, white

Wrinkled, smooth

Axial, terminal

Page 7: Patterns of Inheritance. Gregor Mendel “Father” of genetics Mid 1800s Austrian monk Studied math and science in Vienna Taught high school Tended to the.
Page 8: Patterns of Inheritance. Gregor Mendel “Father” of genetics Mid 1800s Austrian monk Studied math and science in Vienna Taught high school Tended to the.

Mendel’s 4 Hypotheses1. There are alternative versions

of genes that account for variations in characteristics.

Page 9: Patterns of Inheritance. Gregor Mendel “Father” of genetics Mid 1800s Austrian monk Studied math and science in Vienna Taught high school Tended to the.

Mendel’s 4 Hypotheses2. For each characteristic, an

organism inherits 2 alleles—one from each parent.

Page 10: Patterns of Inheritance. Gregor Mendel “Father” of genetics Mid 1800s Austrian monk Studied math and science in Vienna Taught high school Tended to the.

Mendel’s 4 Hypotheses3. If the 2 alleles of an inherited

pair differ, then one determines the organism’s appearance.

Page 11: Patterns of Inheritance. Gregor Mendel “Father” of genetics Mid 1800s Austrian monk Studied math and science in Vienna Taught high school Tended to the.

Mendel’s 4 Hypotheses4. A sperm or egg carries only 1

allele for each characteristic because the 2 alleles segregate (separate) during meiosis.

Law of

Segregatio

n

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Dihybrid Crosses: Mendel’s Law of Independent Assortment

Page 13: Patterns of Inheritance. Gregor Mendel “Father” of genetics Mid 1800s Austrian monk Studied math and science in Vienna Taught high school Tended to the.

Dihybrid Crosses: Mendel’s Law of Independent Assortment

X

Page 14: Patterns of Inheritance. Gregor Mendel “Father” of genetics Mid 1800s Austrian monk Studied math and science in Vienna Taught high school Tended to the.

In Dihybrid Crosses, Why Don’t We See This….?

Page 15: Patterns of Inheritance. Gregor Mendel “Father” of genetics Mid 1800s Austrian monk Studied math and science in Vienna Taught high school Tended to the.

The Rules of Probability

Page 16: Patterns of Inheritance. Gregor Mendel “Father” of genetics Mid 1800s Austrian monk Studied math and science in Vienna Taught high school Tended to the.

Traits Thought to be Controlled by a Single Gene

Page 17: Patterns of Inheritance. Gregor Mendel “Father” of genetics Mid 1800s Austrian monk Studied math and science in Vienna Taught high school Tended to the.

Family Pedigrees

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Autosomal Recessive Pedigree

Page 19: Patterns of Inheritance. Gregor Mendel “Father” of genetics Mid 1800s Austrian monk Studied math and science in Vienna Taught high school Tended to the.

Why We Have Laws Against Marrying Your First Cousin!

Page 20: Patterns of Inheritance. Gregor Mendel “Father” of genetics Mid 1800s Austrian monk Studied math and science in Vienna Taught high school Tended to the.

Single-Gene Autosomal Disorders

Page 21: Patterns of Inheritance. Gregor Mendel “Father” of genetics Mid 1800s Austrian monk Studied math and science in Vienna Taught high school Tended to the.

WELCOME TO NON-MENDELIAN GENETICS

(WHICH IS MOST OF HUMAN GENETICS!)

Page 22: Patterns of Inheritance. Gregor Mendel “Father” of genetics Mid 1800s Austrian monk Studied math and science in Vienna Taught high school Tended to the.

Incomplete Dominance

Page 23: Patterns of Inheritance. Gregor Mendel “Father” of genetics Mid 1800s Austrian monk Studied math and science in Vienna Taught high school Tended to the.

Incomplete Dominance

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Codominance: ABO Blood Groups

Page 26: Patterns of Inheritance. Gregor Mendel “Father” of genetics Mid 1800s Austrian monk Studied math and science in Vienna Taught high school Tended to the.

Codominance: ABO Blood Groups

Page 27: Patterns of Inheritance. Gregor Mendel “Father” of genetics Mid 1800s Austrian monk Studied math and science in Vienna Taught high school Tended to the.

Codominance: ABO Blood Groups

Page 28: Patterns of Inheritance. Gregor Mendel “Father” of genetics Mid 1800s Austrian monk Studied math and science in Vienna Taught high school Tended to the.

Why is it so important to give a patient the correct blood type?

Page 29: Patterns of Inheritance. Gregor Mendel “Father” of genetics Mid 1800s Austrian monk Studied math and science in Vienna Taught high school Tended to the.

PleiotropyOne gene has the ability to

influence several characteristics

Page 30: Patterns of Inheritance. Gregor Mendel “Father” of genetics Mid 1800s Austrian monk Studied math and science in Vienna Taught high school Tended to the.

Polygenic InheritanceThe additive effects of 2 or more

genes on a single phenotypic characteristic.

Page 31: Patterns of Inheritance. Gregor Mendel “Father” of genetics Mid 1800s Austrian monk Studied math and science in Vienna Taught high school Tended to the.

Polygenic Inheritance

Page 32: Patterns of Inheritance. Gregor Mendel “Father” of genetics Mid 1800s Austrian monk Studied math and science in Vienna Taught high school Tended to the.

Polygenic Inheritance

Page 33: Patterns of Inheritance. Gregor Mendel “Father” of genetics Mid 1800s Austrian monk Studied math and science in Vienna Taught high school Tended to the.

Don’t Forget About the Influence of the Environment!

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SEX CHROMOSOMES AND SEX-LINKED GENES

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Sex Determination in Humans

Page 36: Patterns of Inheritance. Gregor Mendel “Father” of genetics Mid 1800s Austrian monk Studied math and science in Vienna Taught high school Tended to the.

Sex Determination in Humans

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Red-Green Colorblindness: A Sex-Linked Recessive Trait

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Red-Green Colorblindness: A Sex-Linked Recessive Trait

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Red-Green Colorblindness: A Sex-Linked Recessive Trait

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Hemophilia in the Russian Royal Family

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The Genetics of Calico Cats: Why they are always female!