Which is an accurate description of mobile genetic elements? Select one: Mobile

Question

Which is an accurate description of mobile genetic elements? Select one: Mobile genetic elements demonstrate how genes within an animals genome can themselves be a unit of selection. They copy themselves at the expense of their host. Mobile genetic elements enhance fitness at the level of their host organism:they were crucial to the evolution of the adaptive immune system, for example. Both A and B are true. Neither A nor B is true. Which of these statements about the virulence of rabbit myxoma virus is TRUE? Select one: Rabbit myxoma virus needed to become less virulent so it could coexist with its rabbit hosts. Directional selection favored a coevolutionary escalation where resistance evolved in rabbits and less virulence evolved in the virus. Rabbit myxoma virus became less virulent over time because natural selection favored strains that did not immediately kill the rabbit hosts, enhancing the likelihood of spreading and infecting other rabbits. None of the above are true statements. All of the above are true statements.

Explanation / Answer

1)mobile genetic elements enhance fitness at the level of their host organism: they wer crucial to the evolution of the adaptive immune system for example.

2)rabbit myoxma virus became less cirulent over time because a natural selection favoured strains that did not immediately kill the rabbit hosts,enhancing the likelihood of spreading and infecting other rabbits.

Related Questions

Navigate

• Browse (All)
• Browse W
• Subjects

---

---

Integrity-first tutoring: explanations and feedback only — we do not complete graded work. Learn more.