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Biology Unit 4 > Unit 4 Topic 1 > Flashcards

Unit 4 Topic 1 Flashcards

1
Q

What is DNA?

A

An information Molecule

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2
Q

What are genes?

A

Sections of the DNA

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3
Q

Where is DNA located?

A

Prokaryotes and Eukaryotes

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4
Q

What are the four bases in DNA?

A

adenine (A) thymine (T), Guanine (G) and cytosine (C).

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5
Q

Who does A bond with?

A

T

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6
Q

Who does C always bond with?

A

G

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7
Q

What do telomeres do?

A

Protect genetic information

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8
Q

What do HOX genes do?

A

Enable organisms to develop correct morphology

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9
Q

Is a SRY protein a regulatory protein?

A

Yes

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10
Q

How does a DNA replication error occur?

A

When a base turns into another base.

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11
Q

How does a point mutation occur?

A

When there is an error in a single nucleotide.

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12
Q

What is a frameshift mutation?

A

A mutation that dislocates the translational reading frame.

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13
Q

What is a deletion?

A

Removal of a nucleotide from the DNA sequence.

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14
Q

What is insertion?

A

Adding a nucleotide to the DNA sequence

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15
Q

What is non-disjunction?

A

Failure of two chromosomes separating during gamete formation.

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16
Q

What are mutagens?

A

Substances that cause irreversible change in DNA.

17
Q

What are the two types of mutages?

A

Physical and Chemical

18
Q

What is a locus?

A

A fixed position on a chromosome.

19
Q

What do heterozygous have?

A

Two different alleles.

20
Q

What do Homozygous have?

A

Identical alleles.

21
Q

What is polygenic inheritance?

A

The inheritance of a trait governed by more than one genes

22
Q

What is an autosomal?

A

A chromosome that is NOT a sex cell

23
Q

What is the purpose of Polymerase chain reaction?

A

Amplify a specific DNA segment.

24
Q

What is the purpose of gel electrophoresis?

A

A technique to separate DNA or proteins.

25
Q
A

Biology Unit 4 (2 decks)

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