Bio" refers to a gene that governs a cell's ability to synthesize biotin from inorganic precursors. What does the designation "bio+" indicate?
a. that the bacterium is biologically inactive
b. that the allele is the mutant allele
c. that the bacterium is biologically active
d. that the allele is normal (i.e., wild type)
Answer: d. that the allele is normal (i.e., wild type)
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There are many molecular techniques to identify taxonomy of microorganisms. Match each technique to its proper resolution.
A. Genomic fingerprinting B. 16S rDNA sequencing C. Genome sequencing D. Mole % G+C
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.
Why do some biologists NOT consider reptiles to be a monophyletic group?
A) Birds are the direct descendants of some reptiles. B) All reptiles do not reproduce sexually. C) The ancestors of reptiles are the class Amphibia. D) Reptiles, birds, amphibians, and fish appeared in the fossil record at approximately the same time. E) Reptiles evolved independently at several different times in the past and from several different ancestral species.
which of the following is a secondary sex organ
What will be an ideal response?