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Biology > genetics 2 > Flashcards

genetics 2 Flashcards

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0
Q

What happens when one nucleotide is substituted for another

A

Points gift mutation

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1
Q

What is a change in organisms dna

A

Mutation

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2
Q

What is the insertion or deletion of a nucleotide in DNA sequence

A

Frame shift mutation

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3
Q

What happens when a piece of one chromosome moves to a. No homologous chromosome

A

Translocation

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4
Q

What happens when chromosomes do not line up with each other and one chromosome has two copies of a gene

A

Gene duplication

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5
Q

Do all mutations affect phenotype

A

No

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6
Q

What are agents in the environment that cause mutations

A

Mutagens

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7
Q

What do mutagens do

A

Speed up the rate of replication errors and break DNA strands

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8
Q

What is an example of a natural mutagen

A

Uv rays

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9
Q

What is an example of an unnatural mutagen

A

Industrial chemicals

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10
Q

What chromosomes determine sex

A

Sex chromosomes

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11
Q

What determines everything else besides your sex

A

Autosomes

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12
Q

What appears in more males than females

A

X linked recessive

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13
Q

True or false x linked recessive is passed from father to son

A

False

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14
Q

What happens to the affected males mutation in x linked recessive

A

All daughters carriers

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15
Q

How many sons will be affected by x recessive carrier females

A

1/2

16
Q

What is the mutation line in x recessive

A

Grandpa
Carrier female
Grandson

17
Q

The wife of a mutant in x recessive is …

A

Homozygous normal

18
Q

Affected females will have …

A

All sons affected and all carrier daughters

19
Q

In x dom who is more affected

A

Females

20
Q

How often is x dom seen

A

Every generation

21
Q

Describe x dom sons and daughters

A

Affected male will have all affected daughters but no affected sons

22
Q

In auto dom how often is it

A

Every gen

Biology (9 decks)

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