Which mammal has not yet been cloned and brought through the complete gestation cycle?

A) cow
B) human
C) pig
D) cat


Answer: B

Biology & Microbiology

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Which of the following statements about species, as defined by the biological species concept, is (are) correct? I. Biological species are defined by reproductive isolation. II. Biological species are the model used for grouping extinct forms of life. III. All members of a species can potentially interbreed.

A) I and II B) I and III C) II and III D) I, II, and III

Biology & Microbiology

Compare and contrast the chemical composition and structure of the cytoplasmic membranes found in Bacteria and Archaea. What is the advantage of the archaeal membranes in relationship to the types of environments many archaea inhabit?

What will be an ideal response?

Biology & Microbiology

Which of the following base pairs would be targeted and repaired by a mismatch repair system?

A. A -T B. C-G C. A-G D. A-G and C-G E. A-T and C-G

Biology & Microbiology

Which of the following is an induced defense?

A) bright coloration of poison dart frogs B) high-pitched alarm calls by a squirrel C) background color matching by a chameleon D) walking sticks resembling twigs

Biology & Microbiology