Which of the following would inhibit the growth of most plants?
A) abundant humus
B) air spaces
C) good drainage
D) a pH above 10.0
D
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You have an opportunity in biology lab to observe the prepared, stained karyotypes of a stallion, a mare, and their foal offspring horses. Banding patterns of some of the autosomes from the foal match those of the stallion, while others from the foal match those of the mare. This variability is produced in meiosis due to
A. random alignment of chromosome pairs. B. semiconservative replication. C. random fertilization. D. mutation. E. nonrandom fertilization.
Given that the nature of DNA replication in eukaryotes is not as well understood as in prokaryotes, (a) present a description of DNA (chromosome) replication as presently viewed in eukaryotes and (b) state the differences known to exist between
prokaryotic and eukaryotic DNA replication.
________ is a macromolecule containing alternating N-acetylglucosamine and N-acetylmuramic acid cross-linked by short peptide fragments.
Fill in the blank(s) with the appropriate word(s).
The ratio of leghemoglobin-bound O2 to free O2 in the root nodule is on the order of
a. 1000:1. b. 10,000:1 c. 100,000:1. d. 1,000,000:1.