A single point mutation in a mitochondrial gene involved in protein synthesis that affects oxidative phosphorylation is an example of a maternal inheritance pattern that is characteristic of mitochondrial diseases
A. true
B. false
A
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The necropsy (postmortem analysis) of a freshwater fish that died after being placed accidentally in saltwater would likely show that _____
A) loss of water by osmosis from cells in vital organs resulted in cell death and organ failure B) high amounts of salt had diffused into the fish's cells, causing them to swell and lyse C) the kidneys were not able to keep up with the water removal necessary in this hyperosmotic environment, creating an irrevocable loss of homeostasis D) the gills became encrusted with salt, resulting in inadequate gas exchange and a resulting asphyxiation E) brain cells lysed as a result of increased osmotic pressure in this hyperosmotic environment, leading to death by loss of autonomic function
In pedigree charts, autosomal dominant disorders are expressed in heterozygotes. Therefore, the disorders are typically
A. occur every third generation. B. appear in every generation. C. appear only in males. D. appear only in females. E. seem to disappear in one generation, only to reappear in the next generation.
What is the typical pattern of temperature and rainfall/snowfall in a region, established over a long period of time?
A) climate B) weather C) precipitation D) solar irradiance
?Nonsense mutations change termination codons into amino acid codons.
Indicate whether the statement is true or false