Meiosis

Question 1

Meiosis

Answer 1

The process of cell division that occurs IN the sex organs and PRODUCES the sex cells/gametes

Question 2

Interphase 1

Answer 2

DNA is replicated creating two identical chromatids which are joined at the centromere.
Nuclear membrane disappears

Question 3

Prophase 1

Answer 3

Chromosome have shortened and thickened becoming clearly visible. Pairs of homologous chromosomes line up next to each other. Crossing over occurs.

Question 4

Meiosis 2

Answer 4

The second stage of Meiosis. No Interphase of Prophase stages occur.

Question 5

Crossing Over

Answer 5

Parts of the chromosome of non-sister chromatids exchange pieces of information (and therefore alleles). Linked alleles are separated, the point at which they cross over is a CHIASMA

Question 6

Chiasma

Answer 6

The point at where alleles on non-sister chromatids exchange

Question 7

Metaphase 1

Answer 7

Homologous chromosomes (tetrads) arrange themselves randomly along the cell equator (Independent assortment). Spindle fibres begin pulling the homologous chromosomes apart.

Question 8

Anaphase 1

Answer 8

The homologous pairs separate and move towards the cell poles.

Question 9

Telophase 1

Answer 9

Two new daughter cells form. Each one is genetically unique.

Question 10

Metaphase 2

Answer 10

Chromosomes line up again in the cell equator of each cell

Question 11

Metaphase 2

Answer 11

Chromosomes line up again in the cell equator of each cell. Spindle fibres form. Independent assortment occurs.

Question 12

Anaphase 2

Answer 12

Chromatids separate and move towards the cell poles.

Question 13

Telophase 2

Answer 13

Cytokinesis occurs. Four new haploid daughter cells are formed. Each of them has a different genetic makeup from the other. The cells are gametes.