Answer:
Cold Air Will Sink
Explanation:
As hot air rises cold air will sink, cold air is more heaveir than hot air.
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Answer:
The correct answer is D sister chromatids;centromere
Explanation:
After DNA replication during s phase or synthesis phase of interphase of the cell cycle,each chromosome has a copy and the cell that is newly formed is now 4n.
We cal these identical pairs sister chromatids and they are held together by a centromere
A solid block of steel will sink in water
I think a relative frequency of alleles or genetic variation will remain unchanged for generations. For example if there is a 1 percent genetic variability in an organism of first generation, then the genetic variability in an organism of second generation will also be approximately 1 percent. There will not be a rapid increase in genetic variations. Mutation will not occur or if occur then it will be at the rate of equilibrium.