The fact that during gamete formation, the segregation of alleles for a gene on one chromosome does not influence the segregation of alleles for a gene on another chromosome is Mendel's law of Select one:
a. random fertilization.
b. crossing over.
c. population dynamics.
d. segregation.
e. independent assortment.
e. independent assortment.
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The lipopolysaccharide (LPS) that is found in the outer membrane of gram-negative bacteria is also known as
A. teichoic acid. B. exotoxin. C. endotoxin. D. murein.
Which factor is density-dependent?
A) decrease in temperature B) increase in waste production C) decrease in frequency of hurricanes D) increase in rainfall
Which of the following statements about taxonomy is NOT true?
A. Homologous structures are derived from a single structure in the ancestor, although they may be adapted to different uses in the descendent species. B. Analogous structures are derived from a common ancestral structure to perform the same function. C. In cladistics, a common ancestor and all its descendents that share one or more derived traits are placed in a single clade. D. Biochemical data and the fossil record can be used to indicate the length of time since two species diverged from a common ancestor.
In addition to being light and abundant, the capacity of the carbon atom to form _____ bond(s) makes it critical for the chemistry of life.
A) 1 B) 2 C) 3 D) 4