Slideshow 12 Flashcards

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1
Q

codons def

A

they are the “words” of the DNA language

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2
Q

What does each codon do

A

they code for an amino acid to be added to the growing protein

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3
Q

How many nucleotides are in a codon

A

20 biological amino acids
4 nucleotides

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4
Q

do codons overlap

A

no

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5
Q

how many codons are ther

A

64 codons

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6
Q

is there a 1 to 1 correspondence btw codon and amino acid

A

no

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7
Q

the effect of point mutations on protein sequence tells us the code is what

A

non overlapping

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8
Q

each codon codes for what

A

a certain protein

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9
Q

what are the 3 codes used to stop

A

UAA UAG UGA

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10
Q

what prime is more able to mutate and not change the protein

A

3

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11
Q

do proteins show diversity of form and function?

A

yes . great diversity

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12
Q

how is structure and function related

A

structure dictates function

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13
Q

what is a motif

A

motifs can build the DNA binding domain

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14
Q

what does point mutation lead to

A

nonsense and missense mutations

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15
Q

mutations are at what

A

the DNA level

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16
Q

nonsense mutation def

A

introduces a premature STOP codon

17
Q

missense mutatuion def

A

changes the amino acid coded for

18
Q

Amino acid substitutions def

A

when they occur, they tend to substitute a chemically similar amino acid

19
Q

what are mutations

A

the source of diversity

20
Q

silent mutation def

A

the protein is not changed even with a mutation

21
Q

what are the 3 names for mutations

A

silent, missense, nonsense

22
Q

what are the 2 types of mutations

A

insertion-deletion and frameshift mutations

23
Q

frameshift def

A

the reading frame determines the polypeptide

24
Q

insertion def

A

potential for lots of amino acids to be changed downstream of insertion

25
Q
A