Karyotyping is useful for determining:a
the number of chromosomes in an individual.
b. if recessive traits are present.
c. if a specific gene is missing from a chromosome.
d. if gene mutations have occurred.
e. the presence of sickle cell anemi
A
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A typical mutation rate for a bacterium is in the range of 10-6 to 10-9 per kbp
Indicate whether the statement is true or false.
Media function testing should include all of the following except:
a. check test organism viability for expected growth. b. confirm identity of organism using Gram stain. c. compare performance to previous lot number of media. d. reincubate for additional time period if no growth is evident.
The sac fungi are distinguished from all other groups of fungi because their reproductive structures are ________.
A. inside an ascus B. zygospores C. motile D. borne on basidia
Palytoxin is incredibly toxic, perhaps the second most dangerous nonpeptide toxin. It targets the sodium-potassium pump, locking it open and forming a channel through which the ions can passively flow. Palytoxin is produced by zoanthid cnidarians (soft coral), and there have been incidents of poisoning from zoanthids within marine aquaria tanks in people's homes. It is also thought to be the source of the legend of the Limu make o hana ("Seaweed of Death from Hana").What is the likely impact of this toxin on action potentials?
A. They will have longer refractory periods. B. They will occur more frequently. C. They will be stronger and more unpredictable. D. Without ion gradients, action potentials are not possible.