Caffeine is a compound found in the seeds of

many different plants, such as coffee beans, cola

nuts, and cacao beans (the source of chocolate).

The presence of this chemical in all three types

of plants suggests that these plants

(1) inherited identical mutations

(2) share a common ancestry

(3) were exposed to the same type of radiation in

the past

(4) were cloned from a caffeine plant

Question

Caprat4spcjone Caprat4spcjone

27-12-2015
Biology

Answered

Caffeine is a compound found in the seeds of

many different plants, such as coffee beans, cola

nuts, and cacao beans (the source of chocolate).

The presence of this chemical in all three types

of plants suggests that these plants

(1) inherited identical mutations

(2) share a common ancestry

(3) were exposed to the same type of radiation in

the past

(4) were cloned from a caffeine plant

Verified Answer :

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bellbell252 bellbell252 · Answer 1 · 2015-12-27T03:36:19-05:00

Let's go through the choices.
1) It's impossible for IDENTICAL mutations to have been made through these three different plants otherwise they would be the exact same plant right? So the answer is not 1.
2) A common ancestor would make sense as all three evolved to become different plants but still retain the chemical of caffeine.
3)Woohoo! Radiation is fun, but these plants have been around for much longer than radiation has been around. So the answer isn't 3.
4) The same with 1 and 3, cloning hasn't been around that long and even if it had, clones are the exact replications of the mother plant and would the same plant, not three different kinds. So the answer is not 4.

This means the answer must be 2) share a common ancestry.