A limitation of transgenesis is that
A) it only works on very short genes.
B) it only works on vertebrates.
C) the transgene can insert many copies of itself in the genome.
D) the transgene could disappear before it inserts in the genome.
C) the transgene can insert many copies of itself in the genome.
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When nucleotides polymerize to form a nucleic acid _____
A) a covalent bond forms between the sugar of one nucleotide and the phosphate of a second B) a hydrogen bond forms between the sugar of one nucleotide and the phosphate of a second C) covalent bonds form between the bases of two nucleotides D) hydrogen bonds form between the bases of two nucleotides
A key adhesion molecule is ________, which decreases cell adherence when present in insufficient quantities.
Fill in the blank(s) with the appropriate word(s).
Which gland is associated with biological clocks or biorhythms?
a. pineal b. parathyroid c. hypothalamus d. pituitary e. thymus
The condition known as graft-versus-host disease may result after
A) a bone marrow allograft. B) a mismatched blood transfusion. C) a bone allograft. D) a plasmapheresis procedure. E) any type of allograft procedure.