What two fundamental parts make up a chromosome? 1. RNA and collagen proteins
2. DNA and histone proteins
3. RNA and histone proteins
4. DNA and collagen proteins

Q: a: in sexually reproducing animals, once fertilization of the egg takes place, the exists as a single cell until cell division begins

What is the farthest destination to date for a human spaceflight mission?

Which example describes a mutualistic relationship between organisms? young wasps prey on caterpillars. crabs eat the remains of dead fish. tapeworms feed on food in the intestines of cats ants protect a tree on which they feed.