Which noncoding rna coats the inactive x-chromosome in regions of heterochromatin?

The zone, which exists from a depth of 0 to 600 feet, is home to the majority of ocean life.

As a small change in a person's dna can cause a genetic disorder

Dna, in the nucleus carries the genetic code for making proteins in ribosomes. in the diagram, b, represents the proteins produced. dna cannot leave the nucleus to carry the genetic information to the ribosome where proteins are produced. how does the genetic code get from the nucleus to the ribosome? what does a represent? now