Summary Modes of Asexual Reproduction

🌱 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