Biology - B1

All of B1 scaled down - if you can upscale it you're set for this module - just 6 more to go!

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  • Created by: Snowstorm
  • Created on: 14-04-14 14:17
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  • Biology - B1
    • Genes, Chromosomes and DNA
      • Genes are instructions for cells
        • Genes are code for making protein. Different versions of proteins make different characteristics.
        • 2 types of protein; structural and functional
      • Genotpe describes the genes an organism has.
      • A gene is a short length of a chromosome.
    • Genes and variation
      • Sperm and egg cells have half the normal amount of DNA
      • Children resemble both parents but are identical to neither
      • Genes are random in sperm and eggs
    • Inheritance
      • Combination of alleles determines the phenotype
      • Homozygous = 2 alleles the same. example, FF
      • Heterozygous = 2 different alleles. example, Ff
    • Sex Chromosomes
      • the 23rd pair of  chromosomes control whether you're male or female.
      • XX = Female
      • XY = Male
      • Sperms have either X or Y
      • All eggs are X
    • Genetic Disorders
      • Cystic fibrosis
        • Recessive
          • Carriers
      • Huntington's
        • Dominant
        • No cure
          • Cystic fibrosis
            • Recessive
              • Carriers
    • Genetic Testing
      • Ethics
        • Not 100% accurate
        • Miscarriage chance
        • Abortion
        • Should people with genetic disorders have kids?
        • "Abortion always wrong" according to some
      • IVF (In Vitro Fertilisation)
        • Can see before implantation which fertilised eggs have faulty alleles
    • Clones
      • Genetically identicle
      • Twins
        • Embryo splits
      • Asexual reproduction
        • Plants
          • Feeders and bulbs
        • Bacteria
        • Some animals
          • Eggs - identical females
    • Stem Cells
      • Adult
        • Can turn into most cells
      • Embryonic
        • Can turn into all cells
          • Fix faulty body parts
        • Ethics - abortion
      • Unspecialised
      • Potentially treat illneses
      • Fix faulty body parts

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