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Genetics

Definitions

TermDefinition
Nucleotide A unit made up of a base, a sugar and a phosphate
Chromosome A structure in the nucleus containing a long string of genes
DNA It is a double helix shaped chemical which carries genetic information
Mutation A permanent change in genetic code
Mitosis Cell division that occurs in the body cells for growth and repair.
Gene A section of a chromosome that codes for a particular protein and therefore a trait or characteristic
Base The units of the genetic code. Adenine, Cytosine, Guanine, Thymine
Triplet A sequence of three nucleotides that code for an amino acid
Amino acid Building block of a protein
Protein Long chain molecules that control many cell functions
Allele An alternative form of a gene
Cell Basic unit of most living things
Nucleus Control centre of a cell
Meiosis Type of cell division producing gametes
Gamete Cell with half the normal chromosome number
Replication Making an exact copy
Variation Having differences
Created by: Mike.Merrick
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