A biologist discovers a new animal in a marine environment that has hexagonal radial symmetry. Of the following methods, which will best help him classify this organism with the deuterostomes or with some other group such as the ctenophores, sponges, or placozoans?
A.) Dissect the animal to see whether or not it has a notochord. B.) Raise the animal in the lab and trace its embryological development. C.) Observe the animal's feeding behavior. D.) Analyze the animal's mode of reproduction.

Which of these is true of the cytoplasm of an unfertilized egg? a. it is an unevenly distributed mixture of mrna, proteins, organelles, and other substances. b. it does not contain substances that are important in directing development. c. these substances are supplied by the sperm. d. it does not contain substances that are important in directing development. e. development is directed solely by the surrounding cells. f. it is a homogeneous mixture of mrna, proteins, organelles, and other substances. g. it does not contain substances that are important in directing development. h. these substances are produced by the dna of the fertilized zygote.

How energy move through ecosystem ?

The picture depicts budding in the yeast cell. what is the result of this process? a) the bud develops into a yeast cell with new genes. b) the bud develops into a yeast cell with the same genes as the parent cell. c) the bud develops into a yeast cell with half the genetic information from the parent. eliminate d) the bud develops into a yeast cell with double the genetic information