ChloeYeo
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#1
Report Thread starter 1 year ago
#1
I'm confused of when to use the term 'gene' and when to use the term 'allele' when answering questions.
One of the answers in the official mark scheme says:
- linked ALLELES (it was underlined) are inherited together (1 mark)
- two GENES are, tightly linked/ close together (1 mark)
- genes/alleles, are linked (1 mark).

The mark scheme allows saying genes OR alleles are linked,
but only allows saying the linked ALLELES are inherited together,
and when its tightly linked it's GENES and not alleles.

I really don't understand when to use 'genes' and when to use 'alleles'
and their differences IN the context of autosomal linkage.

Can anyone please explain? Thank you so much.
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OGN97
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#2
Report 1 year ago
#2
very briefly alleles are the different version of the genes. so, for example you may have a sequence of gene COX1 in your karyotype but you have two different versions of it that you inherited each of them from one of your parents. and in this way you will have COX1A and COX2A.
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ChloeYeo
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#3
Report Thread starter 1 year ago
#3
i know what alleles are and genes are but I just don't understand how it's used like that for that question...
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