A replicated DNA molecule contains one new strand and one old strand
a. True
b. False
Indicate whether the statement is true or false
True
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Before vaccines became available, infections by the bacterium Clostridium ________ often resulted in skeletal muscles spasms and paralysis of respiratory and cardiac muscle
a. perfringens b. difficile c. botulinum d. tetani
You notice that in your aquarium, previously full of undoubtedly male fish, one is laying eggs. Upon a bit of research, you find out that the species of fish you purchased is a sequential hermaphrodite. Which of the following is true?
A. One of the male fish fertilized its own eggs. B. Since the fish are hermaphrodites, one of the male fish laid eggs and another will likely fertilize them. C. One of the male fish underwent protandry and became a female. D. The fish have protogyny, which allows the males to lay eggs. E. The fish have parthenogenesis, therefore their eggs do not have to be fertilized to be viable.
Alleles that are masked by an epistatic locus are said to be ________ to the genes at that locus
A) conditional B) auxotrophic C) complementary D) functional E) hypostatic
The relationship among a gene, a messenger RNA, and a protein is that ________
A) genes make mRNA, which then make proteins B) genes make proteins, which then make mRNA C) mRNAs make proteins, which then make genes D) proteins make mRNA, which then make genes E) mRNAs make genes, which then make proteins