The ______________________ are cells which form bone.
a. Osteoclasts
b. Osteoblasts
c. Chondrocytes
d. Chief cells
Ans: b. Osteoblasts
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In DNA, most satellite sequences are found in
A) chromosome arms. B) telomeres. C) centromeres. D) spaces around the dark bands.
Which of the following choices does NOT correctly categorize the biological kingdom with the form of reproduction used by the organisms within it?
a. Protista: sexual reproduction, asexual reproduction, and conjugation b. Archaea: asexual reproduction only c. Animalia: both sexual and asexual reproduction d. Bacteria: asexual reproduction only e. Fungi: asexual reproduction only
The relatively short-term changes in allele frequencies within a species or population is
A. neither preserves nor rejects harmful variations in a population. B. preserves harmful variations and rejects favorable variations in a population. C. preserves favorable and harmful variations in a population. D. preserves favorable variations and rejects harmful variations in a population.
Lampreys differ from fishes in that lampreys
A) lack a backbone. B) lack an endoskeleton. C) lack jaws. D) possess a backbone and skull.