Generally, interspecific matings represent an evolutionary dead end, p

hi ,
that was really a nice passage.
+1 for you.
will request you to keep posting RCs like this.

now lets come to question 5
it would have been better if you would have told in which all option you got doubt.
let me explain C THOUGH.

5 - Professor Rowher would most likely agree with which of the following statements?
(A) All traits related to particular functions have evolved only for those particular functions.
(B) Flycatchers represent the best population for studies of bird-mating behavior.
(C) Behaviors may appear functional even under conditions other than those under which the behaviors evolved.
(D) Evolution has played no role in shaping the behavior of interspecifically paired flycatchers.
(E) Hybridization is generally beneficial.

If you locate Professor Rowher..it is in 2nd last para:
Although all three of these mechanisms appear to act in concert to form a single elaborate mechanism specifically evolved to circumvent the usual disadvantages of interspecific mating, studies have shown similar motivations for the behavior of female collared flycatchers mating within the species.
According to Professor Siever Rohwer, collared flycatcher females will choose to nest with subordinate collared flycatcher males that inhabit good territory because collared flycatcher females must pair-bond in order to be successful in raising offspring.To engender the best offspring, however, the females will continue to copulate with higher-quality collared males with whom they are not paired. Thus, females seem to be nesting with males of any species with the best territories available at the time, but they will continue to mate with more attractive males outside of the pair bonds.

the passage starts by saying:
all three of these mechanisms appear to act in concert to form a single elaborate mechanism specifically evolved to circumvent the usual disadvantages of interspecific mating===>means it is thought that behaviour of intermating ==>this was evolved in order to CIRCUMVENT.....something...
BUT (AS THE PASSAGE STARTS WITH ALTHOUGH)
studies have shown similar motivations for the behavior of female collared flycatchers mating within the species.
then he has given the examples of professor.

option (C) Behaviors may appear functional even under conditions other than those under which the behaviors evolved
CLEARLY this conveys the same...it means behaviour..can also been seen with subordinate collared flyctcher.

in short : intermating was done with those catcher who was having enough food.....for the same purpose means for food this female flycatcher will choose to nest with subordinate collared flycatcher males that inhabit good territory because collared flycatcher females must pair-bond in order to be successful in raising offspring

hope it helps

Professor Rowher would most likely agree with which of the following statements?

Siddarth, The questions asks us to draw an inference based on what Professor Rowher had to say. This is a hybrid question (details + inference question) for which we can simply focus on para 3. An analogy method could be used for such a question. Here, we have to look at the answers and make sure their method of reasoning is similar to what Prof. Rowher says.

Breakdown of Para 3 - Acc. to Prof.
1. Collared flycatcher choose to nest with sub. collared flycatcher (who have good territory) - Why? - engender a successful offspring. We can conclude that female collared flycatchers want to raise successful offspring, therefore, they nest with sub. collared flycatcher with good territory.
2. Now notice the transition word However, even after doing so, they still copulate with other attractive males. This sentence is a counter argument, where prof. notices that they still mate with others- why? because they want to engender the best offspring.
3. Last transition, word- Thus, just sums up the previous sentences.

And now if we look at the opening sentence of the para. "Although all three of these mechanisms appear to act in concert to form a single elaborate mechanism specifically evolved to circumvent the usual disadvantages of interspecific mating, studies have shown similar motivations for the behavior of female collared flycatchers mating within the species."
.
We have to notice that Prof. Rowher will likely speak or affirm his thoughts for the italicized part, and in his observations he affirms the sentence. The author is using Prof. Rowhers observations as evidence to support the topic sentence.
From the passage, we can conclude that the someone is doing something for a purpose, and even after accomplishing, it still seeks to fulfill that purpose. In this case the female flyed catcher comes to behave in a certain way for its offspring (raising successful offspring = need good territory), and even after being successful it still seeks others, - Why? - now the evolved behavior has become functional - and second nature to it.

Thus, it can be clearly noted that option C is the answer. Also, notice the word even plays a crucial role in this sentence. no other option has that word or any similar word. Whereas, we know that this is a critical word describing the behavior of the female catcher in the passage.

You can also use the elimination method:
A. likely, but Prof Rowher only talks about one trait here. "ALL traits" is a red flag.
B. Prof. Rowher is not talking about the bird mating in general - Out of scope
D. This is an opposite answer. Evolution in behavior has played a role.
E. Too broad. Don't bring outside knowledge. Moreover, avoid very broad answers in inference+details question.

Tips to eliminate options in Gmat RC :
1. Eliminate answers that are absolute (some rare exceptions)
2. Understand ques type.
Global question - answers can be broad and never specific.
Detail question - answers can never be broad.
Inference ques - assumptions are wrong in this quest type, an inference must always hold true and we should be able to verify it in the passage.


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“In three words I can sum up everything I've learned about life: it goes on.”

Q6: subordinate appears in paragraph 3
In it, the professor says 2 things
A) females nest with the males with the best territory
B) females copulate outside pair-bonds for the best genetics

Thus, females seem to be nesting with males of any species with the best territories available at the time, but they will continue to mate with more attractive males outside of the pair bonds.

This is an alternative explanation to what was said earlier, in which explanations are given as to why females copulate AND nest with the pieds
The females collars are with the male pieds for the resources and have offsprings with whatever will give the best offspring, ie with male collars

6 - The mating behavior of female collared flycatchers paired with subordinate male flycatchers is offered as
(A) an unwarranted assumption behind the adaptive explanation of interspecific matings.
(B) an alternative explanation for pair matings of collared females with pied males.
(C) evidence supporting the hypothesis of adaption for interspecific breeding.
(D) a discredited mainstream explanation for why hybridization is a dead end.
(E) proof in support of the theory that collared and pied flycatchers are separate species.

Q1:
So first do elimination. A, B, and E should be immediately thrown out. Let me know if you don't know why.
C and D are left.
C is implied in the last paragraph, but it's not the primary purpose of the author.
Paragraph 1 and 2 go into 1 type of mating behavior, and paragraph 3 goes into a 2nd type of mating behavior.
Paragraph 4 says we don't know exactly why this happens.

So most of this passage is focused on possible explanations for this bird's mating behavior therefore the answer is D.

1 - The author's primary purpose is to
(A) criticize the basis of a scientific theory.
(B) defend a hypothesis concerning bird-mating behaviors.
(C) point out the need for further study of female collared flycatchers.
(D) describe two possible explanations for the interspecific mating behavior of female collared flycatchers.
(E) defend an unpopular view of a natural phenomenon


Hope I was helpful

Hi Experts,

Can you please tell me why B is the correct answer for question 6 instead of C?

Pay close attention to the lines 1-4 in the second paragraph:

"In many instances, female collared flycatchers nest with male pied flycatchers while continuing to mate with other collared flycatchers, in effect parasitizing the pied flycatchers, who invest in rearing and fledging any offspring."

These lines clearly supports answer choice B

took me 13 minutes. all correct.

I am wrong on question 1
The argument focus on explantion 3 disctinctive factors to work with interspecific mating both with died flycathers and other collard clycathers(within species) . The right answer is that the author give two possible explanations which should be related to to the mating within species and with died flycathers.