Variability in individual physical traits both are determined through

(A) ((both)) ((are)) determined ((through)) genetic factors, environmental factors, and interaction between - incorrect placement of both, followed by wrong usage of are in place of "is" for variability and of "through" instead of by.

(B) ((are)) ((both)) determined by genetic factors, environmental factors, as well as interaction among - same as A.

(C) ((both)) is determined by genetic factors, environmental factors, and interaction between - same as A.

(D) is determined ((through)) genetic factors, environmental factors, as well as interaction ((among)) - same as A. Usage of among is incorrect. It should be between. Eliminate.

(E) //is// determined by genetic factors, environmental factors, and interaction //between// - correct.

Thus, E is best.

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Variability in individual physical traits both are determined through genetic factors, environmental factors, and interaction between these factors.

(A) both are determined through genetic factors, environmental factors, and interaction between

(B) are both determined by genetic factors, environmental factors, as well as interaction among

(C) both is determined by genetic factors, environmental factors, and interaction between

(D) is determined through genetic factors, environmental factors, as well as interaction among

(E) is determined by genetic factors, environmental factors, and interaction between[/quote]


Answer E.

Thanks,
GyM

Hi chetan2u, Skywalker18
I have a doubt between D and E.
Don't we use among incase of more than 2 items and between incase of 2 items.
Here it is more than 2 items so IMO among is appropriate.

Would
) is determined through genetic factors, environmental factors, and interaction among be correct?

Trying to understand if determined through is unidiomatic or not.

GMAT prefers determined by, with the same opinion with sumit411 (Kudos added)

Variability in individual physical traits both are determined through genetic factors, environmental factors, and interaction between these factors.

(A) both are determined through genetic factors, environmental factors, and interaction between - INCORRECT as both is used when there are two items and here there are there items. Also both is incorrectly placed

(B) are both determined by genetic factors, environmental factors, as well as interaction among - Same as Option A hence incorrect

(C) both is determined by genetic factors, environmental factors, and interaction between - Same as Option A hence incorrect


(D) is determined through genetic factors, environmental factors, as well as interaction among - [b]INCORRECT as determined through is not an idiomatic usage. Also the usage of among is incorrect here.[/b]

(E) is determined by genetic factors, environmental factors, and interaction between - CORRECT, Correct Idiom usage is "Determined by " . Also there is perfect parallelism X,Y and Z

Kindly give kudos if my explanation helped

Variability in individual physical traits both are determined through genetic factors, environmental factors, and interaction between these factors.

(A) both are determined through genetic factors, environmental factors, and interaction between

(B) are both determined by genetic factors, environmental factors, as well as interaction among

(C) both is determined by genetic factors, environmental factors, and interaction between

(D) is determined through genetic factors, environmental factors, as well as interaction among

(E) is determined by genetic factors, environmental factors, and interaction between

Variability in individual physical traits both are determined through genetic factors, environmental factors, and interaction between these factors.

(A) both are determined through genetic factors, environmental factors, and interaction between

(B) are both determined by genetic factors, environmental factors, as well as interaction among

(C) both is determined by genetic factors, environmental factors, and interaction between

(D) is determined through genetic factors, environmental factors, as well as interaction among

(E) is determined by genetic factors, environmental factors, and interaction between

Split 1 - SV Agreement Error
Subject = "Variability"
Verb should be singular

Split 2 - use between to compare 2 things, among to compare more than 2 things

Lastly - "Both X and Y" parallelism marker isn't used correctly in (C)

"determined by" is more commonly used, but i don't know that it's more correct than "determined through" - I guess this is contextual.

Answer: (E)

+1 for E

is determined by genetic factors, environmental factors, and interaction between- rectifies the error in the previous choice and hence, is the best choice.

easy question to warm up. such questions dont come in exams

Hi experts
can you clear
Why usage of 'among' is wrong and 'between' is correct in choice D & E respectively?

Answer E.


Thanks,
GyM[/quote]

I couldn't be convinced. As there are several factors so among should be best choice. We are explaining as GMAC gave this option as correct. egmat

Answer E correct

Intelligence is determined genetically and degraded by aspects of the environment (the family environment has no influence over adult intelligence). The heritability of intelligence in adults in developed nations is 85%. More importantly the heritability of psychometric g is up to 91% heritable. Heritability is defined as the variance in the genotype, divided by the variance in the phenotype. When measured in young children, heritability is relatively low, but it increases until adulthood, as shown by the figure below:

This rise in heritability is known as the Wilson Effect. The environment is not a potent factor in determining intelligence. Keep in mind that heritability is defined and determined at the group level.

The Wilson Effect is important because it is robust and shows that beliefs in the potency of environmental factors on intelligence are wrong. If the environment were changing our brains, the impact of those changes would be increasing as the environmental dose increases. The opposite happens.

The shared environment (family) accounts for none of the total variance after age 12. You can also see the 85% heritability in adulthood. Some data show that this level is reached in early adulthood.

So far, there is no known practical means of boosting intelligence. If a person has an IQ of 80, he is likely to maintain that relative position throughout his life.

I just want to ask one question. Which is the preferrable construction for the below statements?

A, B, C, as well as D

or

A, B, and C, as well as D

Which of the above construction is better on GMAT?

Regards
Vighnesh

Hello VIGHNESHKAMATH,

We hope this finds you well.

To answer your query, the first construction is typically preferable, but the latter may be better for cases wherein special attention needs to be called to element D.

Such a distinction is unlikely to be a deciding factor on the GMAT, however.

We hope this helps.
All the best!
Experts' Global Team

as well as connect only 2 things. so, choice d is wrong.
A , B, as well as C is wrong. we can write " A and B as well as C".

I eliminated the B and D because they had 'among' at the end of the sentence and i feel a comparison of only 2 elements are made hence if need be between should have been used.