What happens to a cell in the s phase?
the nuclear envelope develops around each set of chromosomes.
dna replicates to form two copies of chromosomes.
sister chromatids separate out from the chromosomes.

Which of the following describes a boom period? a. as one population increases, another population decreases. b. as one population increases, the other population also increases. c. as one population decreases, another population increases. d. as one population decreases, another population also decreases

Select the correct answer. what is the observable characteristic of a person called? o a. genotypephenotypeoc. alleleo d. gene

which is an effect of short-term environmental changes? a) adaptation b) speciation c) extinction d) death (5 points)