You are researching a family with a heritable disease whose symptoms include hyper-flexible joints, pliable skin, stretchy ligaments, and fragile muscles that tear easily. You plan to use genetic testing to determine the cause of the disease. Which gene do you sequence first?
A. epidermal growth factor
B. actin
C. myosin II heavy chain
D. collagen
Answer: D
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Botanically, the fibers in your cotton t-shirt are _____
a. angiosperm seeds d. fibers from pine needles b. gymnosperm seeds e. cellulose-rich hairs c. lignin fibers
Protein synthesis termination triplet
(A) Nonsense codon (B) Anticodon (C) Ribosome (D) Exon (E) Poly-A tail
Amish populations in Lancaster County, Pennsylvania have high rates of a rare form of dwarfism. The recessive allele that codes for this disorder is found in 1 of 14 individuals in this Amish population, in contrast to 1 in 1,000 in the general population. In Ohio, an Amish population suffers with higher than normal rates of cystic fibrosis and a host of other genetic diseases so rare that some have not yet been named. What factors have caused such severe genetic problems in these two communities?
What will be an ideal response?
Which of the following families of DNA viruses is the most prevalent in humans?
A. Poxviridae B. Herpesviridae C. Adenoviridae D. Polyomaviridae E. Rhinoviridae