Which of the following is an important model organism for studying development? a. E.coli O b. D. melanogaster c. S. cerevisiae O d. C. elegans e. Both b. and d.

Which of the following is NOT a reason why scientists use mice and rats to do experiments. A.they have similar physiology B.they have similar anatomy C.they have similar genetics D.they have similar long lives

You are studying the skeleton and bone morphology across reptiles. You find that in alligators a certain bone in the jaw has elongated whereas in a species of chameleon the bone has shortened in the jaw. In both species the bone still helps control feeding. Is this bone and skeletal morphology a homology?   a. Yes, it is a homology   b. No, it is not a homology   c. Not enough information to tell   d. The answer depends on the specific diet of each species

When the siblings of centenarians were studied, it was determined that … a.Genetics has no role in longevity b. Mortality rates in twins and siblings differ from the general population c. All siblings of centenarians are also centenarians d. There is only a correlation with parental longevity