Mendelian GeneticsHow we inherit our genes.

Gregor Mendel

Genetic inheritance was first explained by Gregor Mendel in 1866.

Why Care?

To understand genetic diseases

To create new genetic variations

To better understand evolution

How are genetic traits passed on?

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DNA Transcription RNA Translation Protein

I think parents pass on their __________ to their offspring

DNARNA Protein

Reminder: Draw out overview

Review

Review

How are genetic traits inherited?

What kind of cells do you need to make a baby?

Gametes: a cell that fuses with another cell during fertilization- Sperm and egg cells- Sex cells

Our genetic inheritance is really complicated so let first focus on the simple pea plant.

Somatic Cells

Somatic Cells: Cells that do not participate in sexual reproduction- ex: muscle cells, neural cells, skin cells

How are genetic traits inherited?: Mendel’s Pea Plant Experiments

How are genetic traits inherited?

Mendel’s Experiment demonstrates the

Law of segregation (the first law): parents pass on a randomly selected copy (allele) of a gene to its offspring.

The second law

Law of Independent Assortment: genes for different traits usually will be passed on separately from each other.

Summary

Gene Inheritance with humans!

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Gene Inheritance with humans!

RR or Rr rr

Can you roll your tongue?

Concept Mapping