Question

question 7 of 20 : select the best answer for the question. 7. the idea that viruses originated as genetic material that was able to move within a genome, eventually exiting a cell and entering another is the ______ hypothesis. a. coevolution b. recessive c. regressive d. progressive mark for review (will be highlighted on the review page)

Explanation:

To solve this, we analyze each option:

• Option A: Coevolution hypothesis involves reciprocal evolutionary changes between interacting species, not about virus origin from mobile genetic material.
• Option B: Recessive refers to a genetic trait expression, not a virus origin hypothesis.
• Option C: Regressive hypothesis suggests viruses evolved from more complex organisms that lost functions, not from mobile genetic material.
• Option D: Progressive (or escape) hypothesis proposes viruses originated from genetic material (like transposons) that could move within a genome, exit a cell, and enter another, matching the description.

Answer:

D. progressive