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NCEA Level 1 genetics external

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Term
Definition
show Half a set of chromosomes from only one parent (23 for humans)  
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show A full set of chromosomes, half from the mother and half from the father (46 total, 23 from each parent)  
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DNA Replication   show
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semi-conservative   show
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Meiosis   show
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show A type of cell division that creates daughter cells genetically identical to each other and the parent  
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Trait   show
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show A segment of DNA that codes for a particular trait  
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show A particular version of a gene  
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complementary base pairing   show
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Homologous pairs   show
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show The increased survival of a organism with a particular trait due to changes in the environment and selection pressures  
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Heterozygous   show
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Homozygous   show
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Recessive   show
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show An allele that is expressed in the phenotype and masks any recessive allele.  
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Genotype   show
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Phenotype   show
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show Pressures such as lack of food that cause natural selection  
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Variation   show
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show A permanent change in the sequence of DNA due to addition, deletion or substitution. They can be harmful, beneficial or neutral.  
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Nucleuotide   show
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Created by: AnnabelleFenn
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