Sample Answer The Stages of Meiosis Process

SAMPLE ANSWER FOR ASSIGNMENT MCO WEEK 7 ( 4-8 MEI 2020).
The Stages of Meiosis Process

Prophase II Late Prophase I
Anaphase I Prophase I

Metaphase I

Anaphase II Metaphase II Telophase II

Figure MEIOSIS I
Early Prophase I
Explanation

Chromosomes in form of chromatin.
Chromosomes begin to condense and shorter
Homologous chromosomes come together to form
bivalents through a process called synapsis.

Late Prophase I NO OF Non-sister chromatids exchange segments of DNA
CHROMOSOMES in a process known as crossing over.

4 The points at which segments of chromatids cross
over are called chiasma
PASTIKAN SIZE HOMOLOGOUS
CHROMOSOMES SAMA BESAR ATAU Nucleolus and nuclear membrane disappear

KECIL Centrioles migrate to the opposite poles of the cells

Spindle fibres start to form.

Matephase I NO OF
CHROMOSOMES
The homologous chromosomes are lined up side by
4 side on the equatorial plane.

WAJIB GUNA HOMOLOGOUS CHROMOSOMES

Figure Explanation

Anaphase I NO OF Homologous chromosomes move to the opposite
CHROMOSOMES poles of the cell.

4

Telophase I Chromosomes arrive at the poles

NO OF Each pole now has haploid daughter nucleus because
CHROMOSOMES it contains only one set of chromosomes.
2
Spindle fibres disappear
Prophase II
Nuclear membrane nucleolus reappears

NO OF
CHROMOSOMES
2

MEIOSIS II

NO OF Nuclear membranes of the daughter cells disintegrate
CHROMOSOMES again.
2 IN EACH
DAUGHTER The spindle fibres reform in each daughter cell.
CELLS

DAUGHTER CELLS

Figure Explanation
Metaphase II

NO OF Chromosomes are lined up on the equatorial plane
CHROMOSOMES
2 IN EACH
DAUGHTER
CELLS

NO OF CHROMOSOMES IS SAME BUT ONLY
APPEAR IN DIFFERENT FORM OF

CHROMOSOMES AT CERTAIN STAGES

Anaphase II

The centromeres of the sister chromatids finally
separated and move towards the opposite poles of the
cell.

NO OF
CHROMOSOMES
2 IN EACH
DAUGHTER
CELLS

NO OF CHROMOSOMES IS SAME BUT ONLY
APPEAR IN DIFFERENT FORM OF

CHROMOSOMES AT CERTAIN STAGES

Telophase II

NO OF The nucleoli and nuclear membranes re-form
CHROMOSOMES
2 IN EACH 4 The spindle fibres disappear
DAUGHTER
CELLS Cytokinesis occur and four haploid daughter cells are
formed

Each contain half the number of chromosomes and it
genetically different from the parent diploid cell.

NO OF CHROMOSOMES IS SAME BUT ONLY It will develop into gametes
APPEAR IN DIFFERENT FORM OF

CHROMOSOMES AT CERTAIN STAGES