Autosomal nondisjunction can result in
A) trisomy X.
B) Down syndrome.
C) Klinefelter syndrome.
D) Turner syndrome.
E) XYY males.
B
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If a chemical inhibitor of DNA ligase was added to bacterial cells after DNA replication initiation, the outcome would be
A) elongation of both strands would not occur without ligase to join new nucleotides together. B) elongation would occur, but Okazaki fragments would not be joined together. C) elongation of the lagging strand, but not the leading strand would occur. D) normal replication would proceed as DNA ligase is not required for this process. E) too many supercoils would build up in the DNA, resulting in a halting of elongation.
The tall and short phenotypes in pea plants are examples of
A. polygenic traits. B. continuous traits. C. multifactorial traits. D. discontinuous traits. E. gene interaction.
A virus is made up all of the following except:
A. Nucleic Acid B .Protein C. Capsids D. Ribosomes
Which of the following pairs of proteins shares the most overall similarity in structure?
A) B-cell receptors and T-cell receptors B) B-cell receptors and antibodies C) T-cell receptors and antibodies D) antibodies and antigens