Monday, 20 May 2013

3.31 understand that many mutations are harmful but some are neutral and a few are beneficial

A lot of mutations are harmful, like genetic diseases; cystic fibrosis.
Some don't change the chances of survival: like having a different colour hair.
There are a few mutations which are beneficial, for example a insect pollinated plant becoming brighter.
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5 comments:

  1. Unknown6 October 2015 at 23:35

    I agree that even most of the mutations are not helpful, but some of the are indeed good, which is base of the research of the the gene knockin or knockdown http://www.creative-animodel.com/Animal-Model-Development/Knockdown-Services.html.

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  2. Anonymous25 January 2016 at 09:51

    Amazing notes on the IGCSE Biology spec. Thanks

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  3. Unknown16 May 2016 at 07:18

    Most mutations actually don't do anything few are harmful and even fewer are beneficial

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  4. Mike Tsang26 June 2017 at 04:35

    The Biology Syllabus has changed…

    Here is a New blog for the 2017 Syllabus:

    http://igcse-biology-2017.blogspot.hk

    ReplyDelete
  5. SophieRice27 June 2017 at 06:26

    more at

    http://igcse-biology-notes.blogspot.hk/2017/06/331-understand-that-many-mutations-are.html

    ReplyDelete

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