Approximately 40% of all children with Down syndrome have congenital ____________________ defects
Fill in the blank(s) with correct word
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Which of the following steps is the third step of the mating-type switch mechanism?
A. A 3' single-stranded overhang is created. B. The MAT locus is cleaved by a specific nuclease to create a double-stranded break. C. Strand invasion of HMLa or HML? is mediated by Rad51. D. As the 3' invading end is extended by DNA polymerase, the HML locus information is copied, whereas the MAT gene information is degraded. E. When the extension has proceeded far enough, it dissociates and reanneals to its original strand.
Enzymes
a. change the rate of a reaction. b. change the direction of a reaction. c. change the free energy of a reaction. d. are used up in a reaction. e. are present in concentrations approaching their substrates' concentrations.
Subtle differences in DNA sequences that vary from person to person are called ________
A) genomics B) chromosomes C) DNA microarrays D) pharmacogenomics E) single-nucleotide polymorphisms
What would be the most obvious outcome of repeated cell cycles consisting of S phase and M phase only?
(a) Cells would not be able to replicate their DNA. (b) The mitotic spindle could not assemble. (c) Cells would get larger and larger. (d) The cells produced would get smaller and smaller.