Multiple choice

As a result of the ground-breaking work of Watson and Crick, many biologists now believe that all of the information encoded in 60,000 to 70,000 of the different genes found in a fruit fly cell are contained in merely two percent of the cell’s DNA.

  1. 60,000 to 70,000 of the different genes found in a fruit fly cell are contained in merely

  2. 60,000 to 70,000 of the fruit fly cell’s different genes are contained in a mere

  3. the 60,000 to 70,000 different genes found in fruit fly cells are contained in merely

  4. 60,000 to 70,000 of fruit fly cell’s different genes is contained in merely

  5. the 60,000 to 70,000 different genes found in a fruit fly cell is contained in a mere

Reveal answer Fill a bubble to check yourself
E Correct answer
Explanation

Options (1), (2) and (3) are incorrect because of subject-verb disagreement with ‘are’ being used for ‘information’. Option (4) uses ‘merely’ - an adverb – to modify ‘two percent of the cell's DNA’ (a noun) making it incorrect. Hence (5).