Concept 1Children resemble their parents.
Mid-1800s French caricature by Honore Daumier titled "Un Nouveau Nez," translated "A New Nose". Some human traits were thought to be inherited
1832 caricature titled "A Chip off the Old Block". Some human traits were incorrectly thought to be inherited.
Thomas Hunt Morgan (1933 winner of the Nobel Prize for Medicine for his work on the chromosomal theory of inheritance), with his daughters, Isabel (left) and Lilian (right), 1920.
Young George Beadle (1958 winner of the Nobel Prize for Medicine), with his father and sister, 1914.
Mendel's first name was Johann. He chose the name "Gregor" when he entered the monastery.
Even before Mendel, other scientists were breeding plants and animals. Why didn't they come up with the Laws of Inheritance?
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Mid-1800s French caricature by Honore Daumier titled "Un Nouveau Nez," translated "A New Nose". Some human traits were thought to be inherited.
Children resemble their parents.
Genes come in pairs.
Genes don't blend.
Some genes are dominant.
Genetic inheritance follows rules.
Genes are real things.
All cells arise from pre-existing cells.
Sex cells have one set of chromosomes; body cells have two.
Specialized chromosomes determine sex.
Chromosomes carry genes.
Genes get shuffled when chromosomes exchange pieces.
Evolution begins with the inheritance of gene variations.
Mendelian laws apply to human beings.
Mendelian genetics cannot fully explain human health and behavior.