Which disorder is characterized by an abnormal number of autosomes?
A) Turner syndrome
B) Klinefelter syndrome
C) Trisomy X
D) XYY syndrome
E) Down syndrome
E
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When the p53 gene is overexpressed in normal cells, the cells are killed.
Answer the following statement true (T) or false (F)
Multiple sites of DNA replication along eukaryotic chromosomes are known as
A) replicons. B) multireplication forks. C) helicase loaders. D) ARS elements. E) None of these answers are correct.
What is typical osmolarity of body fluids in most freshwater invertebrates?
a. about 225 mOsm/L b. about 300 mOsm/L c. about 1000 mOsm/L d. about 1500 mOsm/L
Which statement below is an accurate description of receptor-mediated dimerization?
a) Ligands act as allosteric inhibitors that turn off the ability of their receptors to form dimers. b) Ligands act as bridging factors that allow the receptors to dimerize. c) Ligands act as allosteric regulators that turn off the ability of their receptors to form dimers. d) Ligands act as allosteric regulators that turn on the ability of their receptors to form dimers. e) Ligands act as allosteric inhibitors that turn on the ability of their receptors to form dimers