Genetics Answers

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Why do people study genetics? Select all that apply.

A
to understand how genetic information is passed from one generation of organism to another
B
to understand how offspring are created through the process of reproduction
C
to understand how the instructions for building and maintaining an organism are stored
D
to understand how cells are structured within various types of organisms
5

Select the best answer from the drop-down menu to complete the sentence.

Answers:
Selection 1:DNA
Selection 2:RNA
Selection 3:proteins.
6

What do DNA and RNA have in common? Check all that apply.

A
They both consist of nucleotides.
B
They both carry genetic information.
C
They are both double-stranded.
D
They are both created through replication.
7

Which of the following statements concerning the human genome are true? Check all that apply.

A
The human genome contains approximately 23,000 nucleotides.
B
The human genome contains approximately 23,000 genes.
C
All human genomes have the same set of genes.
D
All human genomes are slightly different from one another.
8

What is an organism’s genotype?

A
its specific set of physical traits
B
the number of genes in its genome
C
its specific set of genes
D
the number of nucleotides in its genome
9

Select the best answer from the drop-down menu to complete the sentence.

Answers:
Selection 1:DNA
Selection 2:RNA
Selection 3:proteins.
10

Select the best answer from the drop-down menu to complete each sentence. The enzyme helicaseDNA polymerase✔ ligase reassembles the newly copied DNA molecules.

Answers:
reassembles the newly copied DNA molecules.:ligase
“reads” the original DNA strand.:DNA polymerase
11

Question text not available

Answers:
.:nucleotides
unwinds the DNA molecule, allowing replication to begin.:helicase
12

Select the best answer from the drop-down menu to complete each sentence. Replication✔ TranscriptionTranslation is the process by which RNA is created.

Answers:
is the process by which RNA is created.:Transcription
strand.:DNA
is the process by which DNA is copied.:Replication
14

✔ RNADNAproteins

Question illustration
A
✔ RNA
B
DNA
C
proteins
15

How do DNA and RNA differ? Check all that apply.

A
DNA is single-stranded; RNA is double-stranded.
B
DNA is double-stranded; RNA is single-stranded.
C
One contains genetic information; the other does not.
D
One is used to move genetic information around the cell; the other is not.
16

What is a gene?

A
a single strand of DNA
B
the fundamental unit of heredity
C
a single nucleotide
D
the fundamental unit of DNA
17

Which of the following are ethical issues raised by the study of genetics? Check all that apply.

A
how genetic information is used in health care
B
who has access to genetic information
C
the contents of your genome
D
whether or not to create new forms of life
18

What is an organism’s phenotype?

A
its specific set of physical traits
B
the number of genes in its genome
C
its specific set of genes
D
the number of nucleotides in its genome
20

RNA.DNA.✔ proteins.

Question illustration
A
RNA.
B
DNA.
C
✔ proteins.

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