Phase of cell division that occurs between prophase and metaphase and is characterized by attachment of the spindle fibers to the kinetochores of each sister chromatid.
What will be an ideal response?
prometaphase
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Microorganisms that live on dead and decaying organic material are known as
A) indigenous microflora. B) parasites. C) pathogens. D) saprophytes.
How is a DNA fragment containing a gene of interest generated for cloning?
a. The gene with a cloning vector is ligated. b. Agarose gel electrophoresis takes place c. The polymerase chain reaction (PCR) amplifies the DNA fragment from the genome d. A DNA polymerase specific for the fragment is used to make copies e. DNA fingerprinting allows the fragment to be copied from the chromosome.
The dominant stage in the life cycle of tracheophyte plants is the
A. angiosperm generation. B. sporophyte generation. C. spore generation. D. epiphyte generation. E. gametophyte generation.
A mutation that changes a normal codon to a stop codon is called a
A. back mutation. B. point mutation. C. silent mutation. D. missense mutation. E. nonsense mutation.