sEcït0N
6.3
MENDEL AND HEREDITY
Study Guide
KEY CONGEPT
VOCABULARY
Mendel's research showed that traits
are inherited as discrete units.
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it
MAIN IDEA: Mendel laid the groundwork for
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AW
of seg re g
genetics.
l.
What is genetics?
2.
Whose early work is the basis for much of our current understanding of genetics?
3. How did Mendel's
0n
r0ss
views on inheritance difîer from the views of many scientists
of
his time?
that
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MAIN IDEA: Mendel's data revealed patterns of inheritance.
In designing his experiments, Mendel made three important choices that helped him see
patterns of inheritance. In the table below, list Mendel's tlree choices and write an example
ofhow he put each ofthese choices into action.
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Mendel's Choices
4.
Control over breeding
removed the stamens and fertilized pistilwith
from a pea plant of his choice
5.
Use of purebred plants
used'self-poll ínating , purebred pea plants
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Example
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6. studied "either-or" traíts
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not
ate
characteristics such as pea shape, pea color,
color, pod shape, pod color, flower position, and
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7. Why did Mendel use pea plants?
Unit 3 Resource Book
McDougal Littel Biology
Srudy
Guide 9
Name
Period
STUDY GUIDE, CONTINUED
8. Fill in the sequence diagram below to summarize Mendel's
experimental process.
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in F, generbtion with
dominant phenotype.
to self-pollinate.
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9.
Mendel concluded that traits are inhçrited as "disorete units." What do we call these
discrete units today?
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1O. What two conclusions make up Mendel's law of segregation?
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f each gene in their gametes.
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Vocabulary
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11. Segregation means "separation." What is "segregated" in Mendel's law of segregation?
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12. What does "purebred"
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mean?
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10
Study Guide
Unit 3 Resource Book
McDougal Littell Biology