Which factor has the greatest influence on the
development of new, inheritable characteristics?
(1) combinations of genes resulting from mitosis
(2) mutations of genes in reproductive cells
(3) sorting of genes during asexual reproduction
(4) recombining of genes during differentiation

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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