Biology › Cell cycles, reproduction and development

Cell cycles, reproduction and development

Unit B06 · 3 lessons published so far.

• The cell cycle: growth, copying, and one division that changes nothing
  The cell cycle through G1, S and G2 to mitosis, the three checkpoints and what each one asks, chromosomes as chromatids after replication, the…
• Stem cells: what a cell can still become, and what fixes it
  What a stem cell is and what self-renewal means, the four levels of potency from totipotent to unipotent with a real example of each, the four…
• Gametes and fertilisation: from two cells to a blastocyst
  How sperm and eggs are produced and the ways spermatogenesis and oogenesis differ, the structure of each gamete tied to the job it does, binding to…

Practical work that lands here

• Preparing biological material: squashes, sections and mounts