heritable variation

• what is another term for heritable variation

  genetic variation
• how is genetic variation increased

  through sexual reproduction
• what happens during prophase 1 of meiosis that helps ensure genetic variation

  the crossing over of homologous chromosomes
• what happens during metaphase 1 of meiosis that helps ensure genetic variation

  independent assortment of chromosomes
• what is the difference between chromosomes and chromatids

  a chromosomes is made up of two chromatid strands
• what happens during metaphase 11 of meiosis that helps ensure genetic variation

  the independent assortment of chromatids
• what 4 processes increase genetic variation when sexual reproduction takes place

  crossing over , independent assortment and the mixing of parental genotype's at fertilisation
• what happens during fertilization to help increase genetic variation

  the mixing of two parental genotypes
• what is the purpose of sexual reproduction

  to Establish new combinations of already present allele
• what does mutations produce

  new alleles
• what has more of an impact on natural selection , sexual reproduction or mutations


  mutations