Which type of physical mapping would be best to use when variable recombination frequency is a concern?

a. restriction fragment length polymorphism
b. cytogenetic mapping
c. radiation hybrid mapping
d. microsatellite polymorphism


c. radiation hybrid mapping

Biology & Microbiology

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Curare is a poison that was used by South American Indians on their arrowheads. Curare blocks the action of the neurotransmitter acetylcholine. How did the action of curare make hunting easier for these Indians?

A. Blocking acetylcholine shut down cellular respiration and killed organisms. B. The prey were paralyzed. C. The hunted animals bled to death. D. Curare interferes with the spontaneous depolarization of heart muscle cells.

Biology & Microbiology

Vitamin D includes a group of steroid compounds that are converted to the steroid calcitriol in human kidneys

Calcitriol is a circulating steroid hormone that binds to Vitamin D receptors and the hormone binding to the Vitamin D steroid hormone receptor results in heterodimerization with a retinoic acid receptor and eventual regulation of calcium and phosphate in the blood stream. Which of the following DNA sequences is a likely HRE for Vitamin D receptor binding? A. NAGAACANNNTCAGCAN B. NAGGTCNNNATTTTAN C. NNTCCAGTTGACCTNN D. NNAGGTCANNNAGGACANN

Biology & Microbiology

The size of an organism determines its domain

Indicate whether this statement is true or false.

Biology & Microbiology

According to astronomers, the universe is

a. contracting. b. getting warmer. c. the same as it was on the day of creation. d. collapsing. e. expanding.

Biology & Microbiology