Introduction to Genetics

Question 1

A scientist wants to examine a genetic disease in humans. The scientist hypothesizes that the disease can be treated by using gene therapy. Humans take a long time to reproduce and develop, so the scientist will have to

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test the hypothesis for a very long time.

Question 2

During an experiment, a scientist crosses a pea plant that has purple flowers with a pea plant that has white flowers. The plants that result from this cross in the F1 generation have both purple and white flowers. What can the scientist conclude?

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The plants in the P generation were not true-breeding.

Question 3

The table below summarizes the traits that Mendel examined during his experiments.Traits Studied by MendelWhat do these characteristics all have in common?

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They can all be easily observed.

Question 4

Which statement describes the offspring of the F1 generation when crossing a pea plant that is true breeding for green seeds with a pea plant that is true breeding for yellow seeds?

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The offspring will inherit one allele from each parent.

Question 5

What alternate form of genes do nucleic acids have that allows them to offer variability?

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allele

Question 6

What controls traits and inheritance?

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nucleic acids

Question 7

Which has the most control of traits and inheritance?

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nucleic acids

Question 8

Scientists often use fruit flies as a method to test hypotheses about human genes. Why are fruit flies advantageous in the study of human inheritance?

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They reproduce quickly and take up little space.

Question 9

Which statement describes Mendel’s hypotheses regarding gametes?

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A gamete carries one allele for a gene.

Question 10

Gregor Mendel’s research formed the basis of the field of

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genetics.

Introduction to Genetics Answers

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