Download Section 6.3 Study Guide: Mendel and Heredity Vocabulary Trait

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Section 6.3 Study Guide: Mendel and Heredity
Vocabulary
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Trait
Genetics
Purebred
Cross
Law of segregation
Review Questions
1. What is genetics?
The study of biological inheritance patterns and variation in organisms.
2. Whose early work is the basis for much of our current understanding of genetics?
Gregor Mendel
3. How did Mendel’s views on inheritance differ from the views of many scientists of his time?
Mendel recognized that traits are inherited as discrete units, whereas many others believed that
traits were “blended” together.
4. Why did Mendel use pea plants? Pea plants reproduce quickly and he could control how they mate.
5. Mendel concluded that traits are inherited as “discrete units.” What do we call these discrete units
today? Genes
6. What two conclusions make up Mendel’s law of segregation? Organisms inherit two copies of each
gene, one from each parent. Genes segregate during gamete formation, so organisms donate only
one copy of each gene in their gametes.
7. Segregation means “separation.” What is “segregated” in Mendel’s law of segregation?
The discrete units, or genes. The result of the separation of chromosomes during meiosis.
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