To what does the 9 + 2 arrangement of microtubules, typical of cilia and eukaryotic flagella, refer?
A) the relationship between the basal body and the axoneme
B) the length of the structures
C) the arrangement of dynein arms with respect to each microtubule
D) the arrangement of microtubules within the axoneme

Question

Quizplus · Accepted Answer

The 9 + 2 arrangement of microtubules refers to the arrangement of microtubules within the axoneme, which is the core structure of cilia and flagella. It consists of nine microtubule doublets arranged in a ring around a central pair of microtubules. This arrangement is essential for the motility of cilia and flagella.

To What Does the 9 + 2 Arrangement of Microtubules