🌱 MODES OF ASEXUAL
REPRODUCTION
1. Definition
Asexual reproduction is a mode of reproduction in which only one parent is involved and no
formation or fusion of gametes occurs.
The offspring produced are:
● Genetically identical to the parent
● Known as clones
2. General Characteristics of Asexual Reproduction
● Involves a single parent
● No fertilization
● Rapid process
● Produces large number of offspring quickly
● Offspring show little or no variation
● Common in unicellular organisms and some plants
3. Modes of Asexual Reproduction
A. FISSION
Definition
Fission is the division of a single-celled organism into two or more identical daughter cells.
1. Binary Fission
The parent organism divides into two identical daughter cells.
Process:
, ● Nucleus divides first (karyokinesis)
● Cytoplasm divides next (cytokinesis)
Types of Binary Fission:
Type Plane of Division Example
Irregular Any plane Amoeba
Longitudinal Along the cell’s Euglena
vertical axis
Transverse Across width Paramecium
Characteristics:
● Very fast
● Occurs under favorable conditions
2. Multiple Fission
The nucleus divides repeatedly to form many nuclei, followed by cytoplasmic division.
Example:
● Plasmodium
Occurs when:
● Conditions are unfavorable
● Organism forms a cyst
B. BUDDING
Definition
Budding is a mode where a small outgrowth (bud) develops on the parent body and later
detaches to form a new organism.
Process:
● Repeated cell division at one site
● Bud grows in size
REPRODUCTION
1. Definition
Asexual reproduction is a mode of reproduction in which only one parent is involved and no
formation or fusion of gametes occurs.
The offspring produced are:
● Genetically identical to the parent
● Known as clones
2. General Characteristics of Asexual Reproduction
● Involves a single parent
● No fertilization
● Rapid process
● Produces large number of offspring quickly
● Offspring show little or no variation
● Common in unicellular organisms and some plants
3. Modes of Asexual Reproduction
A. FISSION
Definition
Fission is the division of a single-celled organism into two or more identical daughter cells.
1. Binary Fission
The parent organism divides into two identical daughter cells.
Process:
, ● Nucleus divides first (karyokinesis)
● Cytoplasm divides next (cytokinesis)
Types of Binary Fission:
Type Plane of Division Example
Irregular Any plane Amoeba
Longitudinal Along the cell’s Euglena
vertical axis
Transverse Across width Paramecium
Characteristics:
● Very fast
● Occurs under favorable conditions
2. Multiple Fission
The nucleus divides repeatedly to form many nuclei, followed by cytoplasmic division.
Example:
● Plasmodium
Occurs when:
● Conditions are unfavorable
● Organism forms a cyst
B. BUDDING
Definition
Budding is a mode where a small outgrowth (bud) develops on the parent body and later
detaches to form a new organism.
Process:
● Repeated cell division at one site
● Bud grows in size
