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Tutor profile: Emma P.

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Emma P.
Certified Teacher of English as a Second Language, 6 years experience tutoring adults
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Questions

Subject: Natural Sciences

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Question:

Bats and whales both use echolocation to navigate their environment. Is this a result of convergent evolution, or do they share a close evolutionary origin?

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Emma P.
Answer:

Bats and whales do not have a closely related phylogeny and therefore this is an example of convergent evolution. Bats and whales actually echolocate in different ways, but they have both evolved very similar solutions to the environmental challenges they face.

Subject: Biology

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Question:

Homologous pairings and crossing overs occur in: A. Mitosis B. Meiosis C. Both of the above D. Neither of the above

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Emma P.
Answer:

Homologous pairings and crossing overs occur in option B. Meiosis. This is because meiosis is the type of cell division used by sexually reproductive organisms to produce gametes. The pairings and crossing over occurs between homologous chromosomes to allow for genetic recombination, thus leading to genetic variation in offspring. In contrast, mitosis is the type of cell division which produces genetically identical cells during growth and cell replacement, therefore no genetic recombination takes place.

Subject: English as a Second Language

TutorMe
Question:

Please choose the correct response from options A, B or C: When you ____ to Paris, you saw the Eiffel tower. A. go B. went C. gone

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Emma P.
Answer:

The correct answer is option B, 'went' = When you went to Paris, you saw the Eiffel tower. This is because 'went' is the past tense of 'to go' and the sentence is talking about a past experience. The second part of the sentence also uses 'saw', the verb 'to see' in the past tense.

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