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JAMB Biology 1998 Question 41

Question 41

Chromosomes, DNA and Sex Linkage

The correct increasing order of size for the cell components responsible for heredity is

  1. A.chromosome → DNA → nucleus → gene
  2. B.DNA → gene → chromosome → nucleus
  3. C.chromosome → nucleus → DNA → gene.
  4. D.DNA → gene → nucleus → chromosome
Show the answer and explanation

Answer: B (DNA → gene → chromosome → nucleus)

Explanation

Genes are made of DNA, genes are carried on chromosomes, and chromosomes are inside the nucleus, so the nucleus is the largest.