During meiosis chromosome pairs randomly line up along each side of the cell equator this arrangement mixes up the chromosomal combinations which what?

During meiosis, chromosome pairs randomly line up along each side of the cell equator. This arrangement mixes up the chromosomal combinations, which  

A.helps ensure reproductive success.  

B.helps create and maintain genetic diversity.

C.helps maintain all of the previous generation's characteristics.

D.helps ensure an equal number of males and females in the next generation.

the right answer is a. skin cells forming from sunlight.

the liver is an organ endowed with a fantastic ability to regenerate

. thus, if a hepatectomy (ablation) of 70% of the hepatic mass is performed in the rat, there is complete recovery in 7 to 10 days.

prokaryotes are beings that have existed since the existence of life on earth, and do not come from another realm.

ribosomes are organelles that exist naturally in eukaryotes, either in free form or attached to the endoplasmic reticulum.

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when a reversible reaction is occurring in both directions at the same rate; the products and reactants do not change in concentration. a chemical reaction where the compound is broken into its constituent parts.