A. A scientist has developed a method for depositing laminin on the surface of tissue culture dishes. She expects to make a fortune by selling these dishes as improved adhesion surfaces for in vitro studies of all types of cell. What is your opinion?

b. Is it possible that cell culture dishes could be developed with specific coatings for the culturing of certain cells? Explain.

c. How is it that most types of cells in culture will adhere to plastic dishes manufactured with no protein coating?

The upper forelimbs of humans and bats have fairly similar skeletal structures, whereas the correspondingbones in whales have very different shapes and proportions. however, genetic data suggest that all three kindsof organisms diverged from a common ancestor at about the same time. which of the following is the mostlikely explanation for these data? a) humans and bats evolved by natural selection, and whales evolved by lamarckian mechanisms.b) forelimb evolution was adaptive in people and bats, but not in whales.c) natural selection in an aquatic environment resulted in significant changes to whale forelimb anatomy.d) genes mutate faster in whales than in humans or bats.e) whales are not properly classified as mammals.