Amal has a serious metabolic disorder known as PKU. His sister has the same disorder. Neither of
Amal’s parents have the disorder. What is the most likely inheritance pattern of this disorder?
A. Autosomal dominant
B. Autosomal recessive
C. X-linked dominant
D. X-linked recessive
E. It is not possible to tell the inheritance pattern from this information.
B
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The laboratory receives a blood soaked gauze pad with some tissue wrapped in it for culture in a sterile container. The proper disposal of the material will include:
a. placement in the appropriate biohazard container. b. placement in the garbage as long as it is enclosed in the sterile container. c. treatment with a disinfectant prior to dis-posal in the biohazard container. d. placement in the appropriate biohazard container and sterilization for contamina-tion with organic material.
Controversy has arisen about using genetically engineered bovine growth hormone to increase milk yield in cattle. The lesson gained from this controversy is that
A) recombinant DNA technology is inherently a bad idea and should be abandoned. B) humans are not wise enough to use this technique properly. C) the whole human society should decide the proper uses of recombinant DNA technology. D) society should let scientists decide the proper uses of recombinant DNA technology. E) citizens should not be allowed to decide such issues, as they tend to make decisions based on emotion.
Nearsightedness is dominant to normal vision and hazel eyes are dominant to blue eyes. A nearsighted woman with hazel eyes who is heterozygous for both traits marries a man with normal vision and hazel eyes. His genotype for eye color is the same as his wife's. Their three children all have blue eyes and normal vision. What is the probability that their next child will have blue eyes and be nearsighted?
A. 1/2 B. 3/8 C. 1/4 D. 5/8 E. 1/8
Without the work of Rosalind Franklin, Watson and Crick would not have known
A. which nucleotides could pair together. B. how many strands of DNA made up the molecule. C. the width of the molecule. D. the shape of the molecule. E. All of the answers are correct.