RNA polymerase can initiate a new RNA chain de novo on a DNA template and thus does not need a primer

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#Id: 2462

#Unit 13. Methods in Biology

A. G. Tiselius (1937) Performed Moving boundary electrophoresis  in a U-shaped tube using Schlieren optics on both end for Measurements of the electrophoretic mobilities.

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#Id: 7329

#Unit 11. Evolution and Behavior

Genetic Disorder

An autosomal recessive condition affects 1 newborn in 10,000 in a random mating population without any  disruptive acting force. What is the approximate expected frequency of carriers in this population?

1 in 1000 newborns

1 in 500 newborns

1 in 100 newborns

1 in 50 newborns

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#Id: 2153

#Unit 9. Diversity of Life Forms

Rates of molecular evolution vary among DNA sites, among genes, and among lineages of organisms.

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#Id: 1188

#Unit 7. System Physiology – Animal

A lesion that interrupts one optic nerve causes blindness in that eye.

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#Id: 4639

#Unit 13. Methods in Biology

Flow cytometry or FACS is the sine qua non (without which, nothing) of the modern immunologist’s toolbox.

Flow cytometry is based on light scattering and fluorescence 

Forward light scattering detect shape and side scattering detects granularity and complexity of the cell