The new and old rodents are both allopolyploid after undergoing sympatric speciation. a. two very similar rodent populations are found on two pacific islands near to one another. a scientist decides to mate some of the rodents and gets viable but sterile offspring. why? b. the offspring were rendered infertile by adaptive radiation, and their parents experienced vicariance. c. the rodents on one island are from recent ancestors that experienced sympatric speciation after allopolyploidy developed in their recent ancestors. d. the rodents on one island are from recent ancestors that experienced allopatric speciation after a dispersive separation from the rodents on the other island.

When in solution, a molecule that moves slowly across an artificial membrane moves rapidly across a plasma membrane. this molecule rapidly enters the cell regardless of whether its concentration is higher inside or outside the cell. using this information, which transport mechanism is most likely to be responsible for the movement of the molecule across a plasma membrane? view available hint(s)when in solution, a molecule that moves slowly across an artificial membrane moves rapidly across a plasma membrane. this molecule rapidly enters the cell regardless of whether its concentration is higher inside or outside the cell. using this information, which transport mechanism is most likely to be responsible for the movement of the molecule across a plasma membrane? active transportexocytosis

Consider the classification levels of a human. eukarya ,animalia ,chordata ,mammalia ,primates, hominidae ,homo ,sapiens .which is the most specific taxonomic level in the classification system above? a sapiens b homo c hominidae d primates

Crossing over is a method of (blank)?