During DNA sequencing, a laser beam scans the fragments on the electrophoresis gel to identify the ____________________
a. gene sequence by the color it fluoresces
b. end nucleotide by the color it fluoresces
c. useful DNA strands that will be analyzed further
d. gene products that have been fixed by the gel
e. gene products that have been sorted by the addition of a probe
b
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Using the life table above, calculate the net reproductive rate (R0) for this population
A) 2.00 B) 3.26 C) 1.30 D) 2.31
The differences in inherited traits among individuals in a population are called _______
A. species variation B. genetic mutations C. genetic variation D. natural selection E. None of these
Many marine mollusks have distinctive larvae which have their bodies encircled by a row of cilia. These larvae are called
A. planulae. B. polyps. C. miracidia. D. zoecia. E. trochophores.
Natural or man-made substances released into soil, air, or water in greater than natural amounts are called:
a. acids b. pollutants c. nutrients d. metals e. chemicals