Arrangement of microtubules in a flagellum and a centriole is respectively

Question

Arrangement of microtubules in a flagellum and a centriole is respectively (A) 9 +2 and 9 + 1 (B) 9 + 1 and 9 + 0 (C) 9 + 0 and 9 +2 (D) 9 + 2 and 9 +0

Tardigrade Admin · Accepted Answer

A centriole possesses a whorl of nine peripheral fibrils. Fibrils are absent in the centre. The arrangement is, therefore, called 9 + 0. Flagellum contains an axoneme of a peripheral doublet fibrils and 2 central singlet fibrils. This arrangement is called 9 + 2 or 11 stranded

Q. Arrangement of microtubules in a flagellum and a centriole is respectively

9 +2 and 9 + 1

9 + 1 and 9 + 0

9 + 0 and 9 +2

9 + 2 and 9 +0

A centriole possesses a whorl of nine peripheral fibrils. Fibrils are absent in the centre. The arrangement is, therefore, called 9 + 0. Flagellum contains an axoneme of a peripheral doublet fibrils and 2 central singlet fibrils. This arrangement is called 9 + 2 or 11 stranded