A cline Group of answer choices was used to describe human variation as early as the Renaissance. is variation that falls into discrete categories. is continuous variation that follows a geographic continuum. describes the pattern of occurrence of trisomy 18.

interphase   is the cell cycle stage in which the cell acquires nutrients, creates and uses proteins and other molecules and starts the process of cell division by replicating the dna. it is the longest stage in the eukaryote cell cycle.

the following   can go wrong during interphase:   a base pair could be mismatched during the duplication process causing a mutation.   correct answer: c

explanation:

the answer is d. chordata

atp is used for energy.