Explain the statement, "Extinction is sometimes a natural process"

What are antigens and antibodies? how are they involved in the body’s response to incompatible blood?

The mixture of sperm and fluids from the seminal vesicles, prostate gland, and cowper's glands is called

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