random

Question 1

Interphase

Answer 1

• longest phase
• much metabolic activity
• newly formed cell grows
  - organ replicates
  - replacing those lost in previous division
• DNA replicates
• Protein is synthesised
  - histones / enzymes
  - requiring ATP

Question 2

Cytokinesis

Answer 2

• division of the cytoplasm to form two cells

animal cell:
- constriction of the parent cell around
the equator form outside, inwards
plant cell:
- droplets of the cell wall form across
the equator of the parent cell from
the centre outwards
- extend and join to form the new cell
wall

Question 3

Crossing over

Answer 3

• At a chiasmata segment of DNA from one
  chromatid can be swapped with the
  equivalent from a chromatid of the
  homologous chromosome
• source of genetic variation
• mixes genes from the parents in one
  chromosome