The letter “A” in the above figure represents

a. nerve cords.
b. ganglion.
c. brain.
d. branching nerves.
e. none of these.


Answer: c

Biology & Microbiology

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A third mutant allele of gene B (allele b3) causes the frogs' eyes to become green, instead of their normal red color. Normally, gene B effects only skin color. What term describes this allele?

A) Hypermorphic B) Neomorphic C) Hypomorphic D) Amorphic E) Haploinsufficient

Biology & Microbiology

Which of the following elements is (are) likely

to provide hints about earth's early atmosphere?

a. ancient rocks b. volcanic eruptions c. ancient rocks and volcanic eruptions d. meteorites and ancient rocks e. meteorites, volcanic eruptions, and ancient rocks

Biology & Microbiology

Alternative forms of a gene are called ________

Fill in the blank(s) with correct word

Biology & Microbiology

Of the following features, which is the most widely shared in the animal kingdom?

A. radial cleavage B. a body plan with symmetry C. protostome development D. molting of a cuticle or exoskeleton E. a triploblastic embryo

Biology & Microbiology