The Ecdysozoa include (select all that apply)
A. annelid worms
B. mollulsks
C. sea anemones
D. arthropods
E. vertebrates
D
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You want to insert your favorite gene, which has been digested with Ncol endonuclease on both ends, into a vector. Ncol recognizes the DNA sequence C*CATGG. The vector you want to use contains many endonuclease recognition sites, but does not include an Ncol site. Which restriction endonuclease would be the most suitable replacement to digest the vector?
A. Sphl - G*CATGC B. Sunl - C*GTACG C. Kpnl - GGTAC*C D. CViAll - C*ATG
A NASA probe returned samples of rocks from the surface of Mars. From these rocks, a prokaryotic organism was isolated and remained viable under conditions similar to that of Mars. The organisms are capable of dividing to replicate themselves. In order to determine whether the DNA replication of these organisms was semiconservative, an experiment using N15/N14 (similar to that of Mendelson and
Stahl) was performed. If the method of DNA replication were conservative, after one generation one would expect to see A) all of the DNA in the heavy (N15) band. B) all of the DNA in the light (N14) band. C) all of the DNA at a point midway between the heavy and light bands. D) half of the DNA in the light band, the other half in the heavy band. E) none of the above
The primary muscle(s) involved in human breathing is/are called the
a. external intercostals. b. internal intercostals. c. diaphragm. d. abdominal wall muscles. e. lung muscles.
What would be the phenotypic and genotypic ratios of a cross between two individuals that are heterozygous for an incompletely dominant trait?
1.3:1 and 1:2:1 2.1:2:1 and 1:2:1 3.1:2:1 and 3:1 4.9:3:3:1 and 3:1