The type of change in chromosomal structure in which a chromosome segment is repeated in the same chromosome is called a(n) _______.
a. inversion
b. translocation
c. deletion
d. duplication
Answer: d. duplication
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Uniform dispersion usually results from individuals of a species repelling each other
Indicate whether the statement is true or false.
Which chemical builds up in Tay-Sachs disease?
a. albumin b. glycogen c. amyloid d. fibrillin e. sphingolipids
Biological magnification refers to the
a. increase in size of animals as they progress through a food chain. b. increase in size of organisms as they progress through ecological succession. c. increase in the efficiency of energy utilization as organisms progress through a food chain. d. accumulation of toxic pollutants as animals pass through a food chain. e. growth of organ size within organisms.
You count 153 colonies on the 1:100,000 poor milk sample plate from the Bacterial Examination of Milk exercise. Calculate the number of bacteria per ml of milk (CFU/ml).
A) 1.53 x 10-8 CFU/ml B) 1.53 x 106 CFU/ml C) 1.53 x 108 CFU/ml D) 1.53 x 10-7 CFU/ml E) 1.53 x 107 CFU/ml