Inheritance

• The cells that fuse in sexual reproduction in plants

  Egg and pollen
• Why does sexual reproduction lead to variation

  Genetic information of parents is mixed
• Why do cells divide by osmosis

  Replace dead cells , growth
• Cell division used for gametes 


  Meiosis
• What organ has meiosis happen

  Ovaries and testes
• how many times does a cell divide in meiosis

  2
• How many cells are made meiosis

  4
• Structure of DNA


  Polymer, double helix
• 1 length of dna

  Chromosome
• Small section of a chromosome

  Gene
• 1 gene codes for ….

  1 protein
• Chromosomes in a. Human body cell

  46
• Chromosomes in A human gamete

  23
• How many pairs of chromosomes in a human body cell

  23
• What do we call the entire genetic material of an organism

  Genome
• Why is studying the genome important

  • search for genes linked to DNA
• Is sex controlled by chromosome or genes

  Chromosome
• What do we call different forms of a gene

  Alleles
• The allele an organism has is the organisms….

  Genotype
• The physical features of an organism are the organisms…

  phenotype
• What is polydactyly


  Extra fingers or toes
• Is the gene for polydactyly recessive or dominant 


  dominant
• How many parents need polydactyly for the child to have it

  1
• Which part of the cell is effected by cyatic fibrosis

  Cell membrane
• Is the gene for cystic fibrosis Recessive or dominant

  Recessive
• Name for a person who has a copy of an allele but doesn’t have the condition

  A carrier
• what can we do to detect genetic disorders before a baby is born

  Embryo screening
• Arguments FOR embryo screening

  • increase chances of a healthy baby
  • Prepare to provide better care after birth
• arguements AGAINST embryo screening

  • damage/kill embryo
  • Unethical as the embryo has a right to life