You have constructed a genomic library of Felis catus (domestic cat) in E. coli. You extract the plasmid DNA from the clones, digest the plasmid with restriction enzymes, separate the resulting fragments by gel electrophoresis,
and transfer the fragments to a nylon membrane by the Southern blot procedure. You then use a fluorescently labeled probe that is complementary to a gene of interest that may be involved in feline lymphoma. The DNA corresponding to one clone yields a single fluorescent DNA band after probing the Southern blot. Based on this information
A) all of the clones tested, except the one described, have the gene of interest.
B) only the one clone described has the gene of interest.
C) the gene of interest is located entirely on the fluorescent DNA band.
D) the part of the gene complementary to the probe is located on the fluorescent DNA band.
E) only the one clone described contains the part of the gene complementary to the probe on the fluorescent DNA band.
Answer: E
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Fossils indicate that the first cells were similar to
existing a. viruses. b. fungi. c. prokaryotes. d. eukaryotes. e. algae.
A/n _______ is a chemical that destroys bacteria except for those in the endospore stage.
A) bacteriostat B) fungistat C) bactericide D) antibiotic
A double-stranded nucleic acid molecule consisting of nucleotide monomers with deoxyribose sugar and the nitrogenous bases adenine (A), cytosine (C), guanine (G), and thymine (T); Capable of replicating, DNA is an organism's genetic material
What will be an ideal response?
Answer the following questions true (T) or false (F)
1. The X and Y chromosomes are not homologous, but in the meiosis of sperm formation, they pair and separate in anaphase I as though they were homologous. 2. Mendel's contribution to genetics was the discovery of DNA. 3. Mendel's crosses with pea plants disproved the notion that, when individuals with two different traits are mated, the genetic information blends in the offspring and is not retained as separate elements.