Answer:
Unlike inbreeding, hybridization is more likely to cause genetic abnormalities.
I think you are right. B is the right answer.
Answer:
Microtubules, like actin filaments, are dynamic structures: they can grow and shrink quickly by the addition or removal of tubulin proteins. Also similar to actin filaments, microtubules have directionality, meaning that they have two ends that are structurally different from one another. I hope this helps :)
It’d be at least 70 million years.
