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#1
Report Thread starter 8 months ago
#1
define gene mutation and explain how gene mutation can have : no effect on an individual and a positive effective on and individual

Not too sure on what to do on the questions - this questions is 4 marks btw
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cow033
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Gene mutation: alteration to base sequence of a gene
It can have no effect if its degenerate: i.e. if the mutation was a substitution of the third base, and it made the same amino acid anyway.
An example of a positive mutation could be with sickle cell anaemia - a hereditary blood disease caused by a mutation that makes it more likely for those affected to survive malaria
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Agashii_
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#3
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a gene mutation is a change in the base sequence of DNA.


uhh it can have no effect sometimes when its a substitution mutation because of the degenrate nature of DNA (I think that's the right word to use) because the same amino acid can be coded for by more then one codon.

positive effective- gives them advantageous alleles maybe? so they can survive and reproduce
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#4
Report Thread starter 8 months ago
#4
(Original post by cow033)
Gene mutation: alteration to base sequence of a gene
It can have no effect if its degenerate: i.e. if the mutation was a substitution of the third base, and it made the same amino acid anyway.
An example of a positive mutation could be with sickle cell anaemia - a hereditary blood disease caused by a mutation that makes it more likely for those affected to survive malaria
Thanks 👍🏼👍🏼🙏🏻👍🏼
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