An isotope undergoes radioactive decay by emitting radiation that has no mass. what other characteristic does the radiation have?

Since the radiation has no mass .It is Gamma radiation.

Step by Step Explanation:

Characteristics of Gamma radiation are as follows:

Gamma radiation has proved itself to be very useful in radioactive treatment of cancer due to its high penetrating power.  

prism b but im not for sure

prophase: we can observe the chromosomes to coil up and condense. they become visible. nuclear membrane and envelope disintigrate.s

metaphase: chromosomes align at the center, the metaphase plate. spindle fibers attach to centromeres of the sister chromatids. they meet at kinetochores.

anaphase: sister chromatids are pulled towards each opposing centromere, set on different poles.

telophase: chromosomes are now clustered up only on either sides of the cell. nuclear membranes reform, and a new cell wall forms along the cell plate. this will lead to cytokinesis, the process that divides the cell membrane and forms the cell wall.