Gregor Mendel Genetics Lessons

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

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What did Gregor Mendel study?

• Mold Spores

• Pea Plants

• Sun Flowers

• Rats

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an observable characteristic

• trait

• personality

• cell

• DNA

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When an organism has two of the same alleles, it is called

• homozygous

• heterozygous

• recessive

• dominant

When an organism has two different alleles, it is called

• homozygous

• heterozygous

• recessive

• dominant

______ is the set of genes possessed by someone

• Karyotype

• Fingerprint

• Genotype

• Phenotype

Humans have _______ pairs of chromosomes, for a total of _______ chromosomes.

• 10, 20

• 25, 100

• 23, 46

• 46, 92

Homozygous is when...

• the alleles are the same
• the alleles are different
• the alleles are absent
• the alleles are present

Heterozygous is when...

• the alleles are the same
• the alleles are different
• the alleles are absent
• the alleles are present

T - tall and t = short
In the punnett square below, what belongs in the missing square

• tt
• Tt
• Bb
• TT

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