Target nucleic acid amplification (polymerase chain reaction [PCR]) methods are based on:
a. the ability of two nucleic acid strands that have complementary base sequences to bond specifically with each other and form a double-stranded molecule.
b. detecting phenotypic traits not detectable by conventional strategies.
c. the principles of complementary nucleic acid hybridization with those of nucleic acid replication that are repeatedly applied through numerous cycles.
d. determining the exact nucleotide sequence of a gene or gene fragment obtained from an organism.
C
In PCR-based methods, the target nucleic acid is amplified by nucleic acid replication; these methods are applied repeatedly through numerous cycles.
You might also like to view...
As a naturalist, you are responsible for training volunteers in the identification of the types of amphibians. The volunteers will use this information to correctly describe the animals to school groups that will visit your nature center. The training documentation for the volunteers lists important characteristics of the different groups of amphibian, but you notice that one of the items on the list is incorrect. Indicate which description is not correct.
A. Frogs and toads have external fertilization whereas salamanders and caecilians have internal fertilization. B. Frogs, toads, and most salamanders have four legs whereas caecilians are legless. C. Frogs and toads lay eggs whereas some caecilians lay eggs and others give birth to live young. D. Salamanders and caecilians have external tails whereas frogs and toads do not. E. Adult frogs, toads, and salamanders are predators of insects and other small animals whereas caecilians are herbivores.
At which of the following stages of meiosis would homologous chromosomes be paired?
A) prophase of meiosis I B) both prophase of meiosis I and prophase of meiosis II C) metaphase of meiosis I D) metaphase of meiosis II E) both prophase of meiosis I and metaphase of meiosis I
How many bones are in the human body?
A) 203 B) 300 C) 308 D) 206
The tapeworms are found in which of the following phyla?
a) Phylum Nematoda b) Phylum Platyhelminthes c) Phylum Cnidaria d) Phylum Annelida e) Phylum Mollusca