If two white guinea pigs with genotype bb are crossed, what is the probability
that the offspring will be white?

What must happen before meiosis can begin? a. four gametes must be produced b. the four tetrads must be pulled apart c. dna doubles and produces sister chromatids d. the cell membrane pinches together

All living organisms are composed of a. only one cell. b. at least 100 cells. c. at least three cells. d. one or more cells.

An ecologist studied the same species of deer during the summer and the winter. she noticed that during the summer, when there was plenty of food, the deer were energetic and playful. however, during winter when food was scarce, the deer moved more slowly and did not run unless they needed to escape a predator. which scientific fact is best supported by her observations?