When DNA with variable number tandem repeats (VNTRs) is sequenced and visualized on a gel, the resulting fragments separate according to their:
A. A-T content.
B. G-C content.
C. color.
D. size.
E. shape.
D
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The most common type of polyploidy in humans is ____
a. trisomy b. monosomy c. triploidy d. tetraploidy e. haploidy
Some eukaryotic DNA sequences act as introns in the cells of some tissues and exons in the cells of other tissues. This
is an example of ____, and allows for ____. a. positive control; feedback inhibition b. gene amplification; the regulation of the rate of transcription c. alternative splicing; the formation of different types of closely related proteins d. DNA methylation; the formation of different types of closely related proteins e. DNA replication; heterodimer formation
Blood pressure depends on:
a. the height and weight of an individual. b. atrial volume and stroke rate. c. blood flow and resistance of blood against the vessel walls. d. total blood volume. e. heart rate.
______________ degranulate in response to neuromodu-lators released at the site of tissue damage.
A. Mast cells B. Basophil C. Macrophages D. NK cells E. T cells