How does a vascular plants xylem differ from its phloem? a. the material that flows in the xylem is only water. b. only xylem transports carbohydrates. c. the materials in xylem flow in only one direction. d. only xylem is found in roots.

Imagine that a mouse has white fur because of a mutation in its dna. which of the following conclusions can be drawn

Which of the following factors would not contribute to allopatric speciation? a) a population becomes geographically isolated from the parent population. b) the separated population is small, and genetic drift occurs. c) the isolated population is exposed to different selection pressures than the ancestral population. d) different mutations begin to distinguish the gene pools of the separated populations. e) gene flow between the two populations is extensive.

Select the correct answer from each drop-down menu. which phase of mitotic division is the highlighted cell undergoing? the cell is undergoing , which is the stage before .