Which of the following characteristics do most amphibians share? A. Amphibians spend their entire lives on land,

B. Amphibians lay their eggs in water.

C. Amphibians are invertebrates.

D. Adult amphibians use gills to breathe.

`B

Explanation:

B. Amphibians lay their eggs in water

g1

choices:

a. g2. b. g1. c. m

cell division has two checkpoints namely, g1

checkpoint and spindle assembly checkpoint. the checkpoint which determines if

division has properly occurred is the g1 checkpoint. at this point, is a damage

in the dna is detected or  the has not reach the optimum size, the cell is

stopped in g1 and is not allowed to proceed to further process.

source:

the cytokine-activated janus kinase (jak)-signal transducer and activator of transcription (stat) pathway has an important role in the control of immune responses. dysregulation of jak-stat signaling is associated with various immune disorders.