Identify two important proteins that are produced using genetic engineering techniques. Briefly discuss why the
genetic engineering techniques used are preferred over the other methods of producing each of the proteins that you
identified. What will be an ideal response?
Here are three possible answers:1.
Insulin produced by genetic engineering is superior to insulin derived from other animals
because it does not elicit an allergic response.
2. Genetically modified growth hormone is available in larger quantities because in the past
growth hormone was available only from cadavers.
3. Recombinant human clotting factor VIII is preferable to factor VIII derived from human
blood, since it is free of contamination by blood borne viruses, such as HIV or hepatitis.
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Seeds that germinate right next to the parent plant compete for
a. minerals. b. sunlight. c. water. d. all of these
The length of a DNA sequence is _____ than the mature mRNA transcribed from it, because
shorter; it does not contain exons. equal; it was transcribed from the DNA sequence. longer; it does not contain introns. shorter; each codon of three bases encodes only one amino acid. longer; each codon of one amino acid encodes three bases.
Cells that provide direct protection and physical support to neurons are
A) located only in the spinal fluid. B) found primarily in lymphatic fluids. C) myelinated. D) neuroglial cells. E) nodes of Ranvier.
The accommodation of the very long DNA strands that are part of a chromosome into the limited space of the nucleus is achieved by coiling the DNA around beads of histones into repeating subunits. These DNA-wrapped histones are called
A. chromatin loops B. rosettes C. nucleosomes D. solenoids