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DNA

Biology

QuestionAnswer
DNA Structure A double helix structure made up of two polymers which is made up of lots of nucleotide Nucleotide has a phosphate, sugar and base Complimentary bases: Adenine & Thymine, Cytosine & Guamine
Chromasomes Made up of lots of DNA strands
Making proteins Three bases (triplet) codes for an amino acid Line of amino acids makes a protein
DNA replication As bases are complimentary, helix splits into two strands and identical copies are made using the bases
Mitosis Makes 1 new cells. 46-92- 2 lots of 46 Diploid as have 2 chromosome sets Clones as asexual reproduction for growth and repair
Meiosis Makes 4 new cells with 1 set of chromosomes, haploid Non-identical For gametes
Stem cells Are unspecialised cells that split to make two cells, one specialised and one returns to the cycle Can be used (hopefully) for organs transplant Unethical as have to test on embryos
Created by: Zoe 1
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