All of the following individuals were involved in improving public health in the 19th century EXCEPT
A) Snow.
B) Spallanzani.
C) Nightingale.
D) Semmelweis.
E) Lister.
B
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Which of the following is the correct order for binary fission?
A. The cell elongates, replicates its chromosome, and separates the chromosome into the two parts of the cell, and a septum forms at midcell. B. A septum forms at midcell, the cell elongates, replicates its chromosome, and separates the chromosome into the two parts of the cell. C. The cell elongates, a septum forms at midcell, the cell replicates its chromosome, and separates the chromosome into the two parts of the cell. D. None of the choices are correct.
The relative location of genes on a chromosome as determined by recombination frequencies is illustrated in a _______ map.
A. DNA B. genetic C. chromosomal D. physical
Which of the following would not be characteristic of the forelimbs of an animal specialized for digging?
A. Limb movements are rapid. B. Limbs are short for their size. C. Limbs have large r compared to L. D. Much of the weight is in the foot. E. All of the answer options are characteristic of digging animals.
You discover an organism that has scaly skin and is aquatic but returns to the land to reproduce. What else would you expect to find in this organism?
A) asexual reproduction B) amniotic egg C) a water vascular system D) radial symmetry