Before meiosis begins, chromosomes duplicate, making chromosomes that have sister chromatids. which step is this?
a. prophase
b. telophase
c. interphase
d. metaphase

Prophase, is a stage of mitosis in which the chromatin condenses into double rod-shaped structures called chromosomes in which the chromatin becomes visible. This process, called chromatin condensation, is involved with the condensing complex. Since the genetic material has been replicated in the prior interphase of the cell cycle, there are two identical copies of each chromosome in the cell.

science-ocean floors and habitats study guide by volleyballqueen3817 a major advance in ocean-floor mapping. list four sections of the ocean floor. algae that use sunlight to produce their own food through photosynthesis. all of the feeding relationships that exist in a habitat. drying out, predators, find food.

i think that is new experiments yield untrustworthy data and should be carefully considered, because you don't know what will happen with the experiments.