Diplomonads, such as Giardia, contain two haploid nuclei per trophozoite. Thus, during the G₁ phase of the cell cycle, there should be a total of how many unreplicated chromosomes per trophozoite, and during the G₂ phase, how many replicated chromosomes per trophozoite?
A) 5; 5
B) 5; 10
C) 10; 10
D) 10; 20
E) 20; 20

Question

Quizplus · Accepted Answer

Diplomonads have two haploid nuclei per trophozoite, each containing 5 unreplicated chromosomes during G₁, resulting in a total of 10 unreplicated chromosomes per trophozoite. During G₂, each of the 10 chromosomes will have replicated, resulting in a total of 10 replicated chromosomes per trophozoite. Therefore, the best answer is C) 10; 10.

Diplomonads, Such as Giardia, Contain Two Haploid Nuclei Per Trophozoite