The most diagnostic (i.e. unique) shared derived trait for animals is the presence of

A. sexual reproduction
B. multicellularity
C. a blastula
D. active movement


Ans: C. a blastula

Biology & Microbiology

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Which of the following best explains both the growth of a vine up the trunk of a tree as well as the directional growth of a houseplant toward a window?

A) nastic movement B) taxic movement C) tropism responses D) morphological responses E) acclimation

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What is the function of a protein kinase?

A. To remove phosphate groups from proteins B. To cleave membrane phospholipids C. To phosphorylate GDP to generate GTP D. To add phosphate groups onto proteins

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The most common phenotype or allele for a gene in a population is referred to as the

A. F1 generation. B. P generation. C. wild-type. D. dominant population. E. recessive population.

Biology & Microbiology

In fruit flies, which of the characteristics you studied was X-linked? ____________________

Fill in the blank(s) with the appropriate word(s).

Biology & Microbiology