Describe how quantitative traits can be explained in Mendelian terms
What will be an ideal response?
The multiple-gene hypothesis is the proposal that alleles at each of the contributing genes obeyed the principles of segregation and independent assortment and had an additive effect in the production of phenotypic variation. Often, these effects can be attributed to having multiple genes (polygenic inheritance), or some traits can have additive effects such that several mutations can have differing effects than single mutations.
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A virus achieves host specificity through ____________ on the surface of the capsid or envelope, which bind to the host cell
A. lipids B. proteins C. sugars D. nucleic acids E. All of the answer choices are correct.
Biosafety Level 2 agents:
a. include those that are the common agents of infectious disease. b. require only standard good laboratory technique. c. include M. tuberculosis, M. gordonae, and Brucella. d. require the use of maximum containment facilities.
For monohybrid experiments, a testcross can result in
which of the following ratios? a. 1:1 b. 2:1 c. 9:3:3:1 d. 1:2:1 e. 3:1
What feature do the carbon and nitrogen cycles have in common?
A. a large atmospheric component B. involvement in global climate change C. often a limiting nutrient D. mostly local cycling E. many microbes involved in cycling