Below is a pedigree of a human genetic disease in which solid color indicates affected individuals. Assume that the disease is caused by a gene that can have the alleles A or a. What is/are the possible genotype(s) of person 2?
A) AA
B) Aa
C) Either AA or Aa
D) aa
E) Cannot be determined
D) aa
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During the mitotic spindle checkpoint, ____
a. cells are in anaphase b. cells arrest if chromosomes are attached properly to the mitotic spindle c. cells become irreversibly committed to S phase d. proper spindle attachment to chromosomes is assessed e. cells enter G0
The modern, living plants in which pollen-producing organs and egg-producing organs are situated
very close together are the
a. gymnosperms. b. angiosperms. c. bryophytes. d. seedless vascular plants. e. seed plants.
Which of the following is an advantage of bacterial culture in diagnosing an infection?
A. Standardized, selective media can differentiate bacteria based on their ability to grow. B. AH bacteria can be easily evaluated by culture. C. The method is very rapid. D. The method rarely poses risks to laboratory personnel
A lateral line system supplements the ________ sense of hearing.
A. fish's B. snake's C. shrew's D. bird's E. whale's