Holt Modern Biology 1st Edition by John Postlethwait ,Janet Hopson

Exercise 10

INTERPRETING GRAPHICS: Use the diagrams of chromosomes below to answer the question that follows. The single chromosome below has two genes; both of which carry a dominant allele Q and R.

Homologous chromosomes are chromosomes that carry genes for the same characteristics, such as eye color or hair color. Which of the chromosomes in the bottom row could not be the homologous chromosome for the single chromosome in the top row?
F) 1
G) 2
H) 3
J) 4