Meiosis

Question 1

Interphase G1

Answer 1

Cell grows

Question 2

Interphase S

Answer 2

Cell replicates the DNA

Question 3

Prophase 1

Answer 3

Nuclear membrane disappears
Homologous chromosomes pair up to form a tetrad.
Tetrad = 4 sister chromatids
-crossing over occurs

Question 4

Metophase 1

Answer 4

Homologous chromosomes line up in middle of the cell
Spindle fibres attach to the chromosomes

Question 5

Anophase 1

Answer 5

The fibres pull the homologous chromosomes toward opposite ends of the cell

Question 6

Telophase 1

Answer 6

The cell seperates into two cells

Question 7

Metophase 2

Answer 7

Individual chromosomes line up in the middle of the cell

Question 8

Anophase 2

Answer 8

The sister chromatids separate and move towards opposite ends of the cell

Question 9

Telophase 2

Answer 9

Meiosis 2 results in four identical haploid cells.

Question 10

Meiosis

Answer 10

= 4 daughter cells
Half of the chromosome numbers in daughter cells compared to parent cells.
Genes in nucleus of daughter cells are different to genes in nucleus of parent cells.
Results in haploid cells
Sexual reproduction
Crossing over occurs
Results in sex cells
Cell division

The cell cycle is the exact same, only everything happens twice because they’re creating 4 different cells rather than 2.

Question 11

Chromosome #

Answer 11

Haploid + Haploid = Diploid
Female gamete + male gamete = offspring
1/2 + 1/2 = 1