A female exhibits two major approaches in choosing a mate, selecting either the phenotypic characteristics of the mate or the
A) number of other females the male has in his harem.
B) ability of the male to provide resources.
C) number of offspring the male has previously produced.
D) age of the male.
B
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A tunicate looks like a sponge. How could a biologist distinguish it from a member of the Porifera?
A. Tunicates do not filter feed. B. Only tunicates produce gametes. C. Unlike tunicates, sponges are symmetrical. D. Tunicates have a stomach. Clarify Question · What is the key concept addressed by the question? · What type of thinking is required? Gather Content · What do you already know about tunicates? Choose Answer · Given what you now know, what information and/or problem solving approach is most likely to produce the correct answer? Reflect on Process · Did your problem-solving process lead you to the correct answer? If not, where did the process break down or lead you astray? How can you revise your approach to produce a more desirable result?
Microorganisms do not generally reproduce sexually; therefore, species are usually defined by phenotypic and genotypic similarities.
Answer the following statement true (T) or false (F)
Before Muller's discovery that radiation induces mutation, scientists had to work on mutations that were found solely by phenotype differences in natural populations
Which of the features of Drosophila made it a fortuitous choice for Morgan and his colleagues? A) having a long life cycle B) especially high rate of mutation C) large number of easily visible phenotypes D) well-known biochemical pathways E) the number of genes with only two alleles
All of the genes and other DNA of an organism constitute its
A. introns. B. genome. C. polygenic makeup. D. multigene family.