When a genetic mutation occurs, which part of the DNA changes? -nitrogen base
-deoxyribose sugar
-phosphate
-the back done

Which flexible structure that supports the nerve cord and led to the backbone

Read the following scenario to answer the following question. in some zoos, rare crosses between a male lion and a female tiger have produced hybrid offspring called "ligers." male ligers are sterile but some female ligers are fertile. in the wild, lion and tiger ranges do not naturally overlap, making such a cross unlikely. furthermore, the solitary behavior of tigers and the social organizations of lions create behavioral differences. applying the biological species concept, the sterility of ligers reveals that a. lions are probably a subspecies of tigers b. tigers and lions are the same species c. a new species called "ligers" is forming d. tigers and lions are separate species

Ais a group of individuals of the same that exist together in the same place at the same time