passwella.
Menu

JAMB Biology 2003 Question 41

Question 41

Chromosomes, DNA and Sex Linkage

An organism that has been extensively used to test the chromosome theory of heredity is

  1. A.Drosophila melanogaster
  2. B.Musca domestica
  3. C.Zea mays
  4. D.Homo sapiens.
Show the answer and explanation

Answer: A (Drosophila melanogaster)

Explanation

The fruit fly Drosophila breeds quickly, has few chromosomes and shows clear traits. T. H. Morgan used it to show that genes are carried on chromosomes.