Meosis + Mitosis Part Two?

Question

1. State the phase that is described by each of the following events during mitosis.

a) The chromosomes move apart and go to opposite poles of the cell.

b) The nucleolus and nuclear envelope reappear.

c) The centrioles complete their own replication.

d) The cell grows in size.

e) The spindle has reached its full development.

f) Chromosomes becomes shorter and thicker strands

2. Match the events to the correct phase of meiosis.

a) pairs of homologous chromosomes line up along the equator of the cell

b) synapsis occurs and the four chromatids form a tetrad

c) replication of the genetic material

d) one member of the homologous pair segregates from the other and begins to move to opposite sides

e) sister chromatids split at the centromere and move toward opposite poles

Answer 1

1.

a) anaphase - chromosomes separate to sister chromatids

b) telophase

c) G2 phase

d) anaphase - when the microtubules lengthen and hence elongates the cell

e) i'm not sure, but during pro metaphase spindle fibres extend from each pole to the middle of the cell (the kinetochores of chromosomes)

f) prophase

2.

a) metaphase 1

b) early prophase 1

c) interphase

d) anaphase 1

e) anaphase 2