DNA & Gentics Keywords

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  • Created by: Curlot
  • Created on: 25-05-15 17:14
Genetic Variation
Meiosis helps to bring about variation by crossing over or assortment
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Gene
A section of DNA that codes for a polypeptide
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Exon
Coding or expressed sequences.
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DNA
Deoxyribonucleic acid
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Codon
A triplet of bases
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Chromatid
One of two identical strands of material that form a chromosome
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Chromosomes
A thread-like structure, composed of DNA and protein. Found in the nucleus
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Centromere
The part of the chromsome that attaches to the spindles during cell division
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Allele
A different form of a particular gene
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Homologus Chromosomes
A pair of chromosomes with similar structural features
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Intron
Non-coding intervening sequence.
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Mitosis
Cell division producing two daughter cells with a full chromosome number
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Meiosis
Cell division producing four daughter cells with half the chromsome number
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Nucleotide
A molecule made from sugar, a phosphate and an organic base
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Recombination
The broken-off portions of chromatids recombine uring meiosis
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Haploid
Half the chromosome number (23)
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Diploid
The constant body number of chromosomes (46)
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Locus
The fixed position of a gene
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Polypeptide
Long chain of amino acids
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Triplet Code
The DNA bases that code for amino acids
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Degenerative Code
An amino acid with more than one triplet code.
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Stop Code
A triplet code that does not code for an amino acid
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Genetic Diversity
The variability within a species due to differences in alleles
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Other cards in this set

Card 2

Front

A section of DNA that codes for a polypeptide

Back

Gene

Card 3

Front

Coding or expressed sequences.

Back

Preview of the back of card 3

Card 4

Front

Deoxyribonucleic acid

Back

Preview of the back of card 4

Card 5

Front

A triplet of bases

Back

Preview of the back of card 5
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