New research by Paul Fildes and K. Whitaker challenges the theory that strains of bacteria can be “trained” to mutate by withholding a metabolite necessary for their regular function. In particular, they consider the case of bacteria typhosum, which needs tryptophan in order to reproduce. Earlier re...

New research by Paul Fildes and K. Whitaker challenges the theory that strains of bacteria can be “trained” to mutate by withholding a metabolite necessary for their regular function. In particular, they consider the case of bacteria typhosum, which needs tryptophan in order to reproduce. Earlier re...

Passage opens saying that new research challenges the theory. Exactly. The new research challenges the theory. The author of the passage just reported on that. The author isn't the one challenging the theory, as E purports. Thanks Tim. I agree that passage is describing an experiment and author is ...

The author uses the term "admittedly" (see highlighted text in 3rd passage) in order to indicate that (A) the second argument has some truth to it, though not for the reasons usually supposed (B) the author has not been successful in attempting to point out inadequacies in the two argument...

Thanks Ron!!
Now i understand that "large deficit causes interest rate rise to rise just because financiers misinterpreted the whole thing". So 2nd argument has truth to it but cause for the given effect is something else (financiers perception).

Thanks Ron for awesome analogies!!
Such analogies are really helpful to me.

In the 1930’s and 1940’s, African American industrial workers in the southern United States, who constituted 80 percent of the unskilled factory labor force there, strongly supported unionization. While the American Federation of Labor (AFL) either excluded African Americans or maintained racially s...

I got this one on latest collection pdf.
If its prohibited to post such source questions, i shall stop doing so.

Thanks

Thanks Ron !!
Finding an assumption question explanation was really helpful.
Thanks

Often said to look like an egg crate, the Omni Coliseum's roof was home to the Atlanta Hawks from 1972-1997 and the Atlanta Flames from 1972-1980. 1. Same as above 2. the Omni Coliseum, home to the Atlanta Hawks from 1972-1997 and the Atlanta Flames from 1972-1980, is often said to look like an egg...

Hi Ron!! Thanks for the feedback. I dint know that Atlanta Hawks and the Atlanta Flames are some sports teams. I thought these are some birds. Anyhow i think i am not even supposed to know this. Somebody in America may not know who is Rajstan Royal ( a major sports team... team that play in front of...

.[/quote]

sure.
i actually do know who they are. (i also know that rajasthan's weather in april/may is my favorite weather.) .[/quote]

So Ron likes hot dry weather.

^^ in other words, DO NOT let this problem give you the idea that you'll have to choose between 2 correctly written sentences that both have (at least somewhat) reasonable meanings. again, if a meaning distinction is relevant on the official exam, it will be a very stark distinction, with only one ...

Hi Ron, D and E are clearly out. Discussing A, B & C, I have 3 doubts in my approach to this problem:- 1. Use of AS/WITH : Large companies downsizing is an example of change or change is because large companies are downsizing? In my view if downsizing is just an example than usage of WITH is OK....

Dats cool man.

I welcome you to India. Anytime..

Most (May be all ) of GMAT aspirant from India adulate Ron.

You gotta big fan following in India.