meiosis (chapter 6)

Question 1

what is an allele

Answer 1

Different versions of the same gene

Question 2

prophase 1

Answer 2

chormosomes condense, the nuclear envelope disintegrates, the neucleolus disappeares and spindle formation begins

Question 3

meatphase 1

Answer 3

is the same as mitosis excpet that the homologous pairs of chromosomes assemble alongthe metaphase plate insteaad of the indivisual chromosomes.
Indepepndant assortment.

Question 4

anaphase 1

Answer 4

is different from aaphase in mitosis because the homologous chromosomes are pulled to the opposite poles and the chromatids stay joined to eachother.

Question 5

telophase 1

Answer 5

the same as telophase in mitosis. the chromosomes assemble at each pole and the nuclear membrane reforms. Chromosomes uncoil.

The cell undergoes cytokinesis and divides ito 2 cells , chromosome reduction is comlete ( goes from diploid to haploid)

Question 6

prophase 2

Answer 6

the chromosomes condense and become visible again. The nuclear envelope breakes down and spndle formation begins.

Question 7

metaphase 2

Answer 7

Differs from metaphase 1, the indivsual chromosomes assemble on the metaphase plate. (like in mitosis)
independant assortment again which leads to more genetic variation.

Question 8

anaphase 2

Answer 8

Unlike anaphase 1, it results in the chromatids of the indivisual chromasomes being pulled to opposite poles of the cell after the division of the centromeres (same as mitosis)

Question 9

telophase 2

Answer 9

the chromatids assemble at the poles. The chromasomes uncoil and form chromatin again, the nuclear envelope reforms.
cytokinesis causes 4 daughter cells