Loss-of-function mutations eliminate the function of a gene product and may be dominant or recessive
Indicate whether the statement is true or false
TRUE
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Jacob von Uexkell used the term Umwelt to explain that animals living in ____ can experience ____ sensory worlds
a. the same place at the same time; identical b. the same place at the same time; different c. different places at different times; identical d. different places at different times; identical e. different places at the same time; different
Why do you think it was important to have all experiments start with guppies from both stocking tanks rather than just one of the stocking tanks? a. Stocking from both tanks is the only way to ensure enough guppies were presentfor robust data analysis
b. Because selection can only operate on alleles that are present in the population,using guppies from both stocking tanks ensured that the full range of alleles inthe natural population were also present in the experimental tank. c. It was not important to have all experiments start with guppies from both stockingtanks.
Mammals have Toll-like receptors (TLRs) that can recognize a kind of macromolecule that is absent from vertebrates but present in or on certain groups of pathogens, such as viral _____
A) double-stranded DNA B) double-stranded RNA C) glycoproteins D) phospholipids
A drug that decreases the flow of potassium through the potassium gates of the membrane would:
A. block action potentials B. increase the threshold of the membrane C. slow the return of the membrane to its resting potential D. cause the membrane to be hyperpolarized