Recessive alleles are usually loss-of-function mutations
Indicate whether the statement is true or false
TRUE
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Which is a reason why most exotic species’ introductions fail?
a. inability of the species to adapt to its new environment b. close oversight by environmental regulatory agencies c. overharvesting of the species for commercial purposes d. limitations on the transportation of invasive species
Streptomyces are aerobic soil bacteria that produce over two-thirds of our antibiotics. Why might a bacterium produce antibiotics?
A. to kill competing bacteria of the same species B. to protect itself from a host immune system C. to kill viruses that may try to infect it D. to allow it to break down the cell walls of plants E. to kill competing bacteria of different species
Proteins are made up of ________ held together by ________ bonds.
A. polymers; hydrogen B. amino acids; peptide C. monomers; ionic D. monosaccharides; covalent
Cyanobacteria produce a cell type known as a (cyst/heterocyst/nodule) that protects nitrogenase from the exposure to oxygen.
Fill in the blank(s) with the appropriate word(s).