ALTERNATING CLEAVAGE Meaning and
Definition
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Alternating cleavage is a developmental process occurring during early embryonic development in some animals, typically in spiralian protostomes including mollusks and annelids. It refers to a distinct pattern of cell division and differentiation that results in the formation of alternating sequences of blastomeres or cells.
In alternating cleavage, the cells divide in a spiral pattern, resulting in the formation of two tiers of cells that are slightly offset from each other. This pattern is in contrast to the more typical radial cleavage found in deuterostomes and certain other animals, where cells divide in a strictly radial pattern.
During alternating cleavage, the tiers of blastomeres alternate in size and position, leading to the formation of distinct embryonic structures. Generally, the smaller blastomeres of one tier are located between the larger blastomeres of the adjacent tier, giving rise to a spiral arrangement. This process is important for the establishment of the body plan and the formation of various tissues and organs.
Alternating cleavage plays a crucial role in determining the symmetry and regional differentiation of the developing embryo. It influences the formation of specialized cell populations and establishes the blueprint for the future body segments. Differentiation and morphogenetic movements occur subsequently, shaping the final form of the organism.
Overall, alternating cleavage is a specialized type of cell division and differentiation observed in certain animals, contributing significantly to their embryonic development and subsequent pattern formation.
Common Misspellings for ALTERNATING CLEAVAGE
- altrenating cleavage
- alterrnating cleavage
- alturnating cleavage
- allternating cleavage
- althernating cleavage
- allturnating cleavage
- alterating cleavage
- altherenating cleavage
