The fundamental unit of taxonomic classification is the ________.
Fill in the blank(s) with the appropriate word(s).
Species
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Natasha has schizophrenia. The probability that her young brother Boris develops schizophrenia too is about ________ times the general worldwide population risk.
A) 2 B) 4 C) 9 D) 12
Refer to the following diagram of a generalized tetranucleotide to answer questions (a) through (e)
(a) Is this a DNA or an RNA molecule? ________ (b) Place an "X" (in one of the circles in the diagram) at the 3' end of this tetranucleotide. (c) Given that the DNA strand, which served as a template for the synthesis of this tetranucleotide, was composed of the bases 5' – A C A G – 3', fill in the parentheses (in the diagram) with the expected bases. (d) Suppose that one of the precursors for this tetranucleotide was a 32P-labeled guanine nucleoside triphosphate (the innermost phosphate containing the radioactive phosphorus). Circle the radioactive phosphorus atom as it exists in the tetranucleotide. (e) Given that spleen diesterase (breaks between the phosphate and the 5' carbon) digests the pictured tetranucleotide, which base(s) among the breakdown products would be expected to be attached to the 32P? Fill in the blank(s) with correct word
Which of the following is the best definition of generation time?
A) the length of time needed for lag phase B) the length of time needed for a cell to divide C) the minimum rate of doubling D) the duration of log phase E) the time needed for nuclear division
The vector involved in African sleeping sickness is the
A. reduviid, "kissing," bug. B. phlebotomine (sand) fly. C. hard bodied tick. D. tsetse fly. E. Anopheles mosquito.