Introduction to Genetics

Question 1

What is a gene?

Revolt · Accepted Answer

a section of DNA that codes for a specific trait

Question 2

The flowchart below shows the three generations of a cross between a pea plant that has yellow pods and a pea plant that has green pods. Green pods are the dominant trait. The flowchart is missing the labels that describe the traits.In which squares should the phrase “Green pods” appear?

Revolt · Accepted Answer

A, C, and D only

Question 3

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

Revolt · Accepted Answer

allele

Question 4

Which is the best example of a hypothesis leading to new experimental methods?

Revolt · Accepted Answer

Thomas Hunt Morgan continued the genetic research of Gregor Mendel, but Morgan used fruit flies.

Question 5

What controls traits and inheritance?

Revolt · Accepted Answer

nucleic acids

Question 6

Some people have freckles, and some people do not have freckles. If a child has freckles, at least one parent has freckles. However, the child may have a sibling that does not have freckles. Which statement best describes the presence of freckles?

Revolt · Accepted Answer

There are two alleles for freckles.

Question 7

Which statement best describes an understanding of genetics that would be missing without the work of Mendel?

Revolt · Accepted Answer

Some alleles are dominant, and some alleles are recessive.

Question 8

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

Revolt · Accepted Answer

test the hypothesis for a very long time.

Question 9

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

Revolt · Accepted Answer

genetics.

Question 10

Which has the most control of traits and inheritance?

Revolt · Accepted Answer

nucleic acids

Introduction to Genetics Answers

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