The Work of Gregor Mendel

Who is Gregor Mendel

• an Austrian Monk from the mid 1800s who contributed to the study of Genetics

• The scientist who discovered the structure of DNA

• a British scientist who discovered penicillin

• The scientist who used X-Ray Crystallography to shed light on the structure of DNA

What did Gregor Mendel study?

• Mold Spores

• Pea Plants

• Sun Flowers

• Rats

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Why did Gregor become a Monk?

• He thought the robe would look cool

• He wanted to rebel against his parents

• He was called by God

• For free college

What was the theory of genetics before Mendel did his experiments.

• All traits were random

• All traits skipped a generation

• All traits were decided by God

• All traits were a mixing of the the parents traits

What specifically about Pea Plants did Mendel Study?

• Color of Pea Flower

• Colors of individual Peas

• Texture of Peas

• All of these

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Why were pea plants perfect a study on Heredity?

• Pea plants are complex

• They were easy to study

• One gene controlled one trait. (i.e. it was simple)

• One gene was controlled by multiple traits

What did Mendel notice?

• Most pea flowers were tall, and some were purple.

• Most of the pea flowers were white, but a few were purple.

• Most of the pea flowers were purple, but a few were white.

• Most pea flowers were short, and some were white.

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What was Mendel's first conclusion?

• Pea plants were inheriting a pair of genetic instructions from both parents.

• Pea plants were inheriting genetic instructions from their grandparents.

• Pea plants were inheriting genetic instructions only from their maternal parent.

• Pea plants were inheriting genetic instructions only from their paternal parent

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What was Mendel's Second conclusion?

• The allele (factor) for purple flowers was stronger, or more dominant, than the white allele (factor)

• The allele (factor) for purple flowers were the same strength, equal dominance, to the white allele (factor)

• The allele (factor) for purple flowers was weaker, or more recessive, than the white allele (factor)

• The allele (factor) for white flowers was stronger, or more dominant, than the purple allele (factor)

What was Mendel's third conclusion?

• The dominant allele (factor) was being passed down less than the recessive allele (factor).

• The dominant allele (factor) of purple flowers was being passed down more than the recessive allele (factor) of white flowers.

• The recessive allele (factor) was being passed down more than the dominant allele (factors).

• Just because purple is the dominant allele (factor), doesn't mean it is being passed down more, it was just being expressed more.