DNA, Genes and Chromosomes

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DNA
Long list of chemical instructions
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Chromosomes
Long lengths of DNA all coiled up
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Genes
Short sections of DNA. Each gene codes for a particular protein
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Protein
Important as they control most of the processes in our body and they determine our inherited characteristics, e.g. eye colour, blood type
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Alleles
Different versions of the same gene
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Double helix
The two strands of a DNA molecule are coiled together in a double helix
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Bases
Chemicals which hold the DNA strands together. Complementary bases are Adenine (A) with Thymine (T) and Cytosine (C) with Guanine (G)
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Diploid
Two copies of each chromosome arranged in pairs. Human body cells are diploid so their diploid number is 46
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Haploid
A single set of unpaired chromosomes. Gametes are haploid so their haploid number is 23 (half the number of chromosomes in a normal cell)
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Other cards in this set

Card 2

Front

Long lengths of DNA all coiled up

Back

Chromosomes

Card 3

Front

Short sections of DNA. Each gene codes for a particular protein

Back

Preview of the back of card 3

Card 4

Front

Important as they control most of the processes in our body and they determine our inherited characteristics, e.g. eye colour, blood type

Back

Preview of the back of card 4

Card 5

Front

Different versions of the same gene

Back

Preview of the back of card 5
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