The sequence UUUUUUUUU.... was among the first to be analyzed to crack the genetic code because
A) it was the simplest to synthesize.
B) it would encode all types of amino acids.
C) it would encode only one type of nucleotide.
D) it would encode only one type of amino acid.
D) it would encode only one type of amino acid.
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What term describes an exotic species that thrives in a new habitat and quickly threatens the existing environment?
a. a pest species b. a keystone species c. an advanced predator species d. an invasive species
The role of the postsynaptic neuron in neural communication is to ____
a. release neurotransmitters b. use gated calcium channels c. contain synaptic vesicles d. block the action of neurotransmitters e. receive the signal from the presynaptic cell
In the rain forests of Panama, scientists found a colony of tree-dwelling black ants where some individuals had red abdomens. When examined, the scientists determined that the ants with red abdomens were infected with roundworm eggs
Birds would prey on these ants, mistaking their red bellies for berries. In the interactions among the tree-dwelling black ants, the roundworms, and the birds, the roundworms are the A) predators. B) parasites. C) hosts. D) mutualists. E) prey.
The failure of either homologous chromosomes to separate during meiosis I or sister chromatids to separate during meiosis II is called ________
Fill in the blank(s) with correct word