Multiple choice

The sex of a fruitfly is determined by

  1. Y chromosome

  2. X and Y chromosomes, the male being XY

  3. the number of X chromosomes, the male being XO

  4. Z and W chromosomes, the male being ZZ

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

The sex of a fruitfly is determined by X and Y chromosomes, the male being XY.