spermatid axoneme [FBbt_00004950]

Flagellar organelle that grows out from the basal body embedded at the base of the nucleus, on an onion stage spermatid. It elongates throughout the elongation stage to extend the length of the sperm tail. It is surrounded by a double membrane (axonemal sheath) and has the characteristic 9+2 disposition, with 9 outer doublet microtubules surrounding a central pair of singlet microtubules. During development, a projection from each doublet microtubule extends to form an accessory microtubule which becomes densely stained. Radial spokes develop that connect the outer doublets with the central region of the axoneme.
Tags:

spermatid axoneme

ID: FBbt_00004950

Adult Anatomy

Flagellar organelle that grows out from the basal body embedded at the base of the nucleus, on an onion stage spermatid. It elongates throughout the elongation stage to extend the length of the sperm tail. It is surrounded by a double membrane (axonemal sheath) and has the characteristic 9+2 disposition, with 9 outer doublet microtubules surrounding a central pair of singlet microtubules. During development, a projection from each doublet microtubule extends to form an accessory microtubule which becomes densely stained. Radial spokes develop that connect the outer doublets with the central region of the axoneme.

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## Classification

Relationships

Alternative Names

Synonym Scope Reference
axial filament exact synonym Fuller, 1993

Expression patterns overlapping spermatid axoneme (1 total)

Thumbnail Name Tags
P{UAS.Cep290-Cep290-GFP} expression pattern Expression_pattern

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