More on Mutations Flashcards

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1
Q

What are the 2 causes of Mutations?

A
  • Chance - Most common cause
  • Mutagens

Mutagens are some factors that can influence teh likelihood of mutations

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2
Q

List some mutagens

A
  1. X-rays
  2. Ionising Radiation (sunlight)
  3. Chemicals
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3
Q

What is the chance of a mutation occurring?

A

2-30 x 10^-7

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4
Q

What usually happens when a mutation occurs?

A
  • Faulty DNA can be repaired by specific enzymes
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5
Q

What is the most common result of a mutation?

A
  • Production of inferior or no protein
  • Results may be fatal or disease causing
  • Occurss due to nearly 6 billion bases needing to be copied - doesn’t always happen accurately
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6
Q

What is an uncommon effect of mutation?

Not very rare

A
  • Neutral Mutation
  • No change
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7
Q

What is a very rare effect of mutation?

A
  • Productio of new/superior protein
  • Results may be gain of reproductive advantage
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8
Q

What is the significance of Beneficial mutations?

A

Responsible for Evolution

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