Adisease called primary ciliary dyskenisia is characterized by abnormal ciliary movements. in these cilia, microtubule functioning is disrupted due to microtubules missing an essential component. this disease could be caused by

The correct answer will be- the lack of dynein proteins

Explanation:

Primary ciliary dyskinesia is a recessive autosomal genetic disorder which affects the action of the ciliary movements present in the fallopian tube, sperms and the respiratory tracts.  

The disease is caused by the defects in the inner and outer dynein arms which provide cilia with their movements or motility caused mutations in the DNAH5 and DNAI1 genes. These genes code for the proteins of these dynein arms.

Thus, the lack of dynein arms is the correct answer.

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