Biology

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  • Created by: 114552
  • Created on: 23-02-16 12:44
GENES
A gene is a short section of DNA. Each gene codes for a specific protein by specifying the order in which amino acids must be joined together.
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CHROMOSOMES
The cells nucleus contains chromosomes made from lonf DNA molecules
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DNA
they are large and complex. they carry teh genetic code that determines the characteristics of a living thing
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Boy
xy
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Girl
**
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y chromsomes
small chromsomes
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how many pair of chromosomes does a human have?
23 pairs
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Allele
different version of the same gene
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if the allele in a matching pair are different they are called ...
...hetrozygous alleles
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if the alleles in a matching pair are the same they are called...
...homozygous alleles
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In 22 pairs teh chromosomes are the same but ...
...the final pair are known as sex chromosomes - different
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Card 2

Front

CHROMOSOMES

Back

The cells nucleus contains chromosomes made from lonf DNA molecules

Card 3

Front

DNA

Back

Preview of the front of card 3

Card 4

Front

Boy

Back

Preview of the front of card 4

Card 5

Front

Girl

Back

Preview of the front of card 5
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