Lesson Objectives By the end of this lesson, you should be able to:
• Describe how water, carbon, nitrogen, and phosphorus are
through ecosystems.
• Demonstrate the of water, carbon, nitrogen, and
phosphorus in ecosystems.
Science Practice: Compare the , human, and
losses to the benefits of a specific scientific example.

Agene with the original sequence of atgtt—tact underwent substitution mutation to form atatt—tact after a few generations. tact is a part of a muscle protein encoding region, and atgtt codes for a digestive enzyme. what will be the effect of this mutation? a. the production of muscle protein will be affected. b. the production of digestive enzymes will be affected. c. the production of both the protein and the enzyme will be affected. d. the production of neither the protein nor the enzyme will be affected.

Why is it important that fibrin is insoluble in water?

What evidence did mendel find that supported his law of independent assortment? a. some traits are controlled by several different genes. b. a trait can be passed on from a parent to an offspring. c. most traits have a dominant form and a recessive form. d. different traits are passed on independently of each other.