Posted by Kate on Sunday, July 4, 2010 at 3:08pm.
Questions 109-111 refer to the map below of the distribution of several populations on the continents of Eurasia and North America. These populations were derived from a common ancestral species. The area enclosed by a given dotted line represents the distribution of the population and the numbers in millions of years refer to the earliest fossils evidence found within the bounded area. Present populations are found only in the shaded areas.
h t t p : / / i m g 7 0 4 . i m a g e s h a c k . u s / i m g 7 0 4 / 9 0 8 0 / 5 9 4 3 3 5 1 2 . p n g
109. The oldest existing population is found at
For this question I am unsure as to what exact it means by "...and the numbers in millions of years refer to the earliest fossil evidence found within the bounded area". Does this mean that the smaller numbers are younger or older. The way I read this section the smaller numbers are younger. Is this correct I don't know. This is more have an issue with English, which I seem to have a hard time understanding what exactly that section meant. If the smaller numbers are older then the answer would be T.
Answer is either Q or T I can't tell which...
110. The two existing populations that are apparently the most closely related are
(A) Q and R
(B) Q and S
(C) Q and T
(D) R and U
(E) S and T
I chose E becasue S and T are the only sections that are right next to each other and only differ in value from millions of years by 5. I feel very confident about this answer but just want to make sure.
111. The data indicate which of the following about the area occupied by the original species?
(A) It increased steadily.
(B) It decreased steadily.
(C) It increased and then decreased.
(D) It decreased and then increased.
(E) it remained relatively stable.
This one was sort of tricky. I want to say C becasue it looks like the section with 30 in it is huge compared to the values with 50 and 5 which lead me to believe that it increased and then decreased...
THANKS BUNCHES for the HELP!!!
- Biology - SraJMcGin, Sunday, July 4, 2010 at 7:09pm
At first I could not access the Imageshack, receiving 404 Error Not Found. However, when I finally did get there, this was absolutely fascinating!
Realizing that we have no biology expert at the moment, here are my best guesses:
First of all, yes, the larger number has been there the longest and the smallest number has been there the least amount of time.
109. I'd say Q (one of the 2 you selected)
110. I'm glad you feel confident on this one because I do not fully understand how to do this one! (I would have said U & Q, obviously an error since it is not one of the choices!)
111. I would have thought the original species would be the 50 and all I could say is "mid Eurasia."
Now I'll go back to the map (I saved the coordinates) and look at the last 2 again.
By the way, may I ask what your native language is, if it is not English? Possibly I could help you better with that!
Sra (aka Mme)
- Biology - SraJMcGin, Sunday, July 4, 2010 at 7:16pm
P.S. Now I concur with #111. (S & T) or E
Now I also agree with 111. (S & T) for the same reason as you.
Actually the hardest part of this post was having to go back and forth between the questions and the map. Next time I would print one or the other! (See? We learn by doing!)
Sra (aka Mme)
- Biology - SraJMcGin, Friday, April 22, 2011 at 6:32pm
And some of those numbers in circles have no letter at all: 40, 20 so today I agree with your 110.
111. If 50 AND 40 are both U, I'd say B
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