Pauling used gel electrophoresis to confirm that homozygous individuals produce a single form of ?-globin protein that differs depending on the homozygous genotype as well as that heterozygotes produce proteins of both types in approximately equal
concentration. What characteristic(s) of the bands proved this? A) the positions of the protein bands
B) the densitometry peaks of each band
C) the shape of each band
D) both the positions and the densitometry peaks of each band (both A and B)
E) both the shape and the position of each band (both A and C)
D
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Penicillin was discovered by
A. Koch. B. Hooke. C. Fleming. D. Ehrlich.
____ arises as a result of directional selection on species who share a habitat and compete for a limiting resource
a. Resource partitioning b. Inclusive competition c. Intraspecific cooperation d. Primary succession e. Secondary succession
Four of the five choices listed below are related by a
common location. Select the exception. a. follicle b. corpus luteum c. cervix d. oogonium e. antrum
In areas where malaria is endemic, sickle cell disease heterozygote carriers are less fit than individuals
homozygous for the normal allele. Indicate whether the statement is true or false.