Tetracyclines interfere with the process of ____________
A. DNA replication D. protein folding
B. transcription E. transformation
C. translation
C
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Which is an example of a quantitative trait?
A. People who are homozygous for the group of genes associated with skin pigment have either lighter or darker skin than those who are heterozygous for those genes. B. The alleles of the gene for red hair color is masked by the gene for brown hair color. C. A person heterozygous for dwarfism will always have the dwarf phenotype. D. A woman who has one allele for color blindness will not be color blind, but a man who has one allele for color blindness will be color blind. E. 25% of the offspring from a cross of two fruit flies that are heterozygous for curly wings will have curly wings.
Which structure is derived from an ancestral air-breathing lung in ray-finned fishes and is used to increase buoyancy?
a. swim bladder b. spiral valve c. operculum d. atrium e. lateral-line system
Studying the Sepia apama cuttlefish, Hanlon, Naud, and their colleagues observed that most success in producing fertilized eggs was attributed to the males guarding mated females from subsequent mating attempts by other males. What additional behavior contributed to successful production of fertilized eggs?
A. As opportunistic hermaphrodites, smaller males were able to mate and reproduce as females. B. Smaller males distracted larger males for more than 40 minutes, past the viability of their sperm, and then the smaller males mated with the females. C. The sparse population density of Sepia apama cuttlefish results in lower but equal reproductive successes among smaller and less aggressive males. D. Smaller, less aggressive males used mimicry of females to approach guarded females repeatedly to mate. E. All of the answer choices are correct.
A Coulter counter is used to obtain pure cultures.
Answer the following statement true (T) or false (F)