How are the 2 sides of the dna chain held together

Which organism is the secondary consumer in this food chain? Aspen - Rabbit - > Snake - Hawk A. Rabbit B. Aspen C. Hawk D. Snake

What effect does turbidity have on an aquatic system?

Consider the evolution of chordates, organisms with a hollow nerve chord. Choose the organism most closely related to humans. A) lamprey B) sea star C) lancelets D) brittle star

If you Dna bases are cat, what would the mRNA look like

Which state best describes the diffrence between a gene and a allele

Which is not a characteristic of amniotic sac

What does the nucleus of a human lymphocyte contain? A. Only the genes to produce a specific antigen B. Only the genes to produce a range of antibodies C. Only the genes that control the growth and development of a lymphocyte D.

What is the functions for chloroplast

How do inbreeding and hybridization compare

A species of gray wolf was eliminated from a national park because of unrestricted hunting. As a result, there was a tremendous increase in the population of its prey, the elk. The populations of other herbivores also increased.