6.7- production of haploid gametes

Cards (5)

  • In humans, there are 46 chromosomes per cell - 23 pairs of autosomal chromosomes and one pair of sex chromosomes.
  • The first division (meiosis 1) separates homologous chromosomes, while the second division (meiosis 2) separates sister chromatids.
  • Meiosis is the process by which diploid cells divide to produce four genetically different haploid daughter cells
  • Interphase- dna is replicated and makes x shaped chromosomes
    prophase 1- chromosomes condense and crossing over
    metaphase 1- line up to the middle!!
    anaphase- separated and pulled to opposite poles
    telophase- nuclear envople forms with cytokinesis
  • crossing over and independent assortment (formation of random chromosomes contributions)