The Axonemal "9 + 2" Pattern of Microtubules is Nine

Question

The axonemal "9 + 2" pattern of microtubules is nine ________ surrounding a(n)________.
A)outer doublets; central pair
B)basal bodies; inner two
C)central tubules; double pair
D)B tubule structures; middle two
E)triplet microtubules; basal bodies

Accepted Answer

The "9 + 2" pattern refers to nine outer doublet microtubules surrounding a central pair of microtubules, characteristic of the axonemes of cilia and flagella.