You are given a sentence and your task is to generate another sentence that supports the given input.

[Q]: Some of these isotopes have half-lives of tens of thousands of years, and therefore require long-term isolation.
[A]: The long-lived isotopes require thousands of years to decay to a safe level in a nuclear reactor.

[Q]: Cells propagate by repeating these four phases and this 4-phase cycle is called 'Cell Cycle'.
[A]: Cells have four cycles.

[Q]: Due to the fusion of the two gametes, a human zygote contains 46 chromosomes (i.e. 23 pairs).
[A]:
In humans, a zygote has 46 chromosomes.