Question

what is the primary function of the g₁ checkpoint in the cell cycle?
a.) check for sister chromatid alignment
b.) ensure proper dna replication
c.) monitor dna damage
d.) assess cell size and growth

Explanation:

The G₁ checkpoint in the cell cycle is crucial for evaluating if the cell has reached an appropriate size and has amassed sufficient resources to progress to the S phase (where DNA replication occurs). Checking for sister chromatid alignment is related to the metaphase checkpoint. Ensuring proper DNA replication is a role of the G₂ checkpoint. Monitoring DNA damage can occur at multiple checkpoints, but the primary role of G₁ is assessing cell size and growth readiness.

Answer:

d. Assess cell size and growth