<span>... geographically patterned variation within a species</span>
Answer: Hemoglobin SC disease is a type of sickle cell disease. People who have Hemoglobin SC disease (also called sickle-hemoglobin C disease) have red blood cells that contain both hemoglobin S and hemoglobin C.
Explanation:
<span>Answer is b. having older brothersOne factor that may cause the teen to be sexually active is the use of alcohol and drugs. Drugs and alcohol can impair one’s good judgment, so the willingness to take risks is increased. Peer pressure can also be a reason for a teen to be sexually active because teens don’t want to be different or rejected by their friends.
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Answer:
It can be stored, transported throughout the tree, and converted into energy which is used to power all cellular processes.
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Explanation:
Answer:
When the virus enters a host cell, a viral enzyme, reverse transcriptase, converts that single-stranded RNA into double-stranded DNA. This viral DNA then migrates to the nucleus of the host cell. Another viral enzyme, integrase, inserts the newly formed viral DNA into the host cell's genome.
Explanation: