Monday, 20 May 2013

3.22 describe the determination of the sex of offspring at fertilisation, using a genetic diagram

Genetic diagrams work the same as mono-hybrid inheritance diagrams: showing the mothers and fathers and then the different out comes. The only difference is, they will always be the same because one parent is always male and one parent is always female:
Gender determination
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4 comments:

  1. sas rosa27 April 2015 at 12:55

    http://www.biologymad.com/geneticsinheritance/geneti4.gif

    this is a more accurate diagram because the ovum only contains 1 X chromosome, rather than 2, but gives the same % overall so it doesn't really matter :)

    ReplyDelete
  2. Unknown15 May 2016 at 14:14

    Unless you're a male with klinefelter syndrome in which case the diagram does change ;)

    ReplyDelete
  3. Mike Tsang26 June 2017 at 04:32

    The Biology Syllabus has changed…

    Here is a New blog for the 2017 Syllabus:

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

    ReplyDelete
  4. SophieRice27 June 2017 at 06:22

    more at

    http://igcse-biology-notes.blogspot.hk/2017/06/322-describe-determination-of-sex-of.html

    ReplyDelete

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