DNA. Alleles, Genes

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  • Created by: hammiem
  • Created on: 04-01-16 08:32
DNA - what is it? what's its structure?
A long molecule of genetic material. Has a double helix structure
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DNA - what's special about it?
It is unique in everyone (although very similar in identical twins so DNA fingerprinting doesn't work)
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How can you be identified?
DNA fingerprinting (not identical twins)
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Chromosomes - what are they?
Very tightly wound DNA. 23 pairs in human CELLS
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Pairs of chromosomes means we have pairs of...
We have 2 copies of EVERY gene which together control 1 characteristic
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Where are chromosomes found?
In the nucleus of a cell
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Gene - where is it found?
On the DNA
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Gene - what is it?
ENCODES THE AMINO ACIDS IN A PROTEIN (H) a small section of DNA that controls a particular feature
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Allele - what is it?
Different versions of the same gene (a gene controls your ear-lobe shape, but 2 different versions of the gene: an attached allele or unattached allele)
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Other cards in this set

Card 2

Front

It is unique in everyone (although very similar in identical twins so DNA fingerprinting doesn't work)

Back

DNA - what's special about it?

Card 3

Front

DNA fingerprinting (not identical twins)

Back

Preview of the back of card 3

Card 4

Front

Very tightly wound DNA. 23 pairs in human CELLS

Back

Preview of the back of card 4

Card 5

Front

We have 2 copies of EVERY gene which together control 1 characteristic

Back

Preview of the back of card 5
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