A small group of mice are released on an island without mice but with abundant food for mice and no predators. Initially, the growth of the mouse population will be limited mainly by what?
A. only density-dependent factors
B. only density-independent factors
C. the biotic potential
D. the carrying capacity
Answer: C
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Some protists use multiple fission (cell division preceded by several nuclear divisions) as a means of reproduction. Multiple fission is also referred to as
A. budding. B. zygotic meiosis. C. schizogony. D. syngamy. E. intermediary meiosis.
Bladders on kelp function to anchor the thallus to the substrate
Indicate whether the statement is true or false
How do histones bind to DNA?
a. by an ionic attraction to the nitrogenous bases of DNA b. by hydrogen bonding with the nitrogenous bases of DNA c. by hydrogen bonding to the deoxyribose sugars of DNA d. by an ionic attraction to the phosphate groups of DNA
In principle, what would be the minimum number of consecutive nucleotides necessary to correspond to a single amino acid to produce a workable genetic code (it can specifically code for all 20 amino acids)? Assume that each amino acid is encoded by
the same number of nucleotides. Explain your reasoning.