The fact that myotonic dystrophy worsens with each generation is due to

A) a second somatic point mutation.

B) an increasing number of repeated short DNA sequences.

C) a transposing tandem triplet repeat.

D) family members perceiving their symptoms as worse.


B) an increasing number of repeated short DNA sequences.

Biology & Microbiology

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A cluster of intracellular linker proteins associated with a junction is called a(n)

A) annulus. B) connexon. C) plaque. D) tonofilament. E) accessory protein complex.

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The efferent arterioles transport blood directly into the:a

afferent arterioles. b. Bowman's capsule. c. glomerulus. d. peritubular capillaries. e. renal artery.

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The genus Frankia ________.

A. produces heat-resistant endospores and is strictly a marine bacterium B. is strictly a marine bacterium C. produces heat-resistant endospores D. grows in symbiotic association with the roots of some higher plants and fixes nitrogen

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