G7: MEIOSIS

Question 1

is a special type of cell division of germ cells in sexually-reproducing organisms that produces the gametes, such as sperm or egg cells. It involves two rounds of division that ultimately result in four cells with only one copy of each chromosome

Answer 1

Meisosis

Question 2

functions of meiosis 1

Answer 2

Starts with 46 chromosomes and
ends with 23 chromosomes.
(Meiosis reduces the number of
cells and produce gamete cells)
Produces 4 haploid cells

Question 3

Identical sister chromatids are
formed after DNA and chromatin
replication.
• Synapsis allows each chromosome
to pair up and bind its homologous
chromosome during fertilization,
forming tetrads.

Answer 3

prophase 1

Question 4

Identical sister chromatids are
formed after DNA and chromatin
replication.
• Synapsis allows each chromosome
to pair up and bind its homologous
chromosome during fertilization,
forming tetrads.

Answer 4

metaphase 1

Question 5

• The chromosomes finally reach

the cell’s opposing poles

Answer 5

telophase 1

Question 6

• The homologous are pulled apart
and moved to the opposite ends of
the cell.

Answer 6

anaphase 1

Question 7

functions of meiosis 2

Answer 7

The cells that enter meiosis Il are
the ones made in meiosis I.
• In meiosis I, the sister chromatids
separate, making haploid cells with
non-duplicated chromosomes,
• Cells move from meiosis I to
meiosis I without copying their
DNA.

Question 8

Chromosomes in cells line up
It attaches spindle fibers from both
poles

Answer 8

metaphase 2

Question 9

down the chromosomes, and a
new set of spindle fibers forms.
• The chromosomes begin moving
toward the equator of the cell.

Answer 9

prophase 2

Question 10

During centromeres
divide. Chromatids move to the
opposite poles of the cells.

Answer 10

Anaphase II

Question 11

m the nuclear
membrane forms around each
set of chromosomes and the
cytoplasm divides.

Answer 11

telophase 2