Compact sponge is the answer :3
They have a back bone
They are cold-blooded
Breathes through skin
(extras)
they go though metamorphosis
and they hatch from eggs! <span />
Answer:
a. methylation at lysine 9 or 27 of histone H3.
Explanation:
Methylation causes the switching off of genes using steric hinderance to prevent access to DNA.
If a moving object loses mass, how can it keep its momentum constant?
A. by speeding up
