What is in the
nucleus? What is
it considered?

Cell chromosomes are contained inside the nucleus. It's considered the control center of the cell (or better put, the "brain") since it stores genetic instructions and information.

Explanation:

Inside every cell is a nucleus which is the powerhouse of the cell. It stores the cell's genetic information in the form of DNA.

Hope this helped!

Source(s): G*ogle, my mind.

answer; for children with two myopic parents,the likelihood of becoming myopic is ) correlated with the number of hours spent playing sports each week;