In a three point test cross there are two gb bt cq progeny and four + bt + progeny out of a hundred progeny,which are the two rarest groups.What can you conclude?
A) The order of the genes is gb cq bt.
B) The 6 progeny are the result of a double crossover.
C) The genes are tightly linked.
D) The order of the genes cannot be determined.
E) The order of the genes is bt gb cq.

Question

Quizplus · Accepted Answer

The rarest progeny in a three-point test cross are the result of double crossovers, indicating that the 6 progeny (2 gb bt cq and 4 + bt +) are the outcome of such events.

In a Three Point Test Cross There Are Two Gb