When the method is perfected, it will be possible to transfer "healthy" genes into cystic fibrosis patients via aerosol inhalants to "cure" this genetic disease. Is this type of gene transfer an actual cure or is it a treatment? In other words, could this person still pass along cystic fibrosis genes?
What will be an ideal response?
Unless it is possible to correct the genetic defect in the person's gametes, they will still be able to pass on the genes for cystic fibrosis. However, the inhalant treatment is an important milestone in the treatment of this disease, especially if it can put a halt to the lung damage so characteristic of the cystic fibrosis patient. The life expectancy for these patients is short otherwise.
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A homozygous milk chocolate Easter bunny is crossed with a homozygous dark chocolate Easter bunny. Assuming dark chocolate is dominant over milk chocolate and the traits segregate according to Mendelian genetics, which traits will be observable in the offspring?
A. All milk B. All dark C. 3 milk to 1 dark D. 3 dark to 1 milk
The ________ chains are structurally distinct for each immunoglobulin class.
Fill in the blank(s) with the appropriate word(s).
In the logistic growth curve depicted in Figure 46.5, as time goes on, what value would you expect N to approach?
A. r B. K C. S D. t E. N
Which of the following do not get infected by viruses?
A. Plants B. Animals C. Bacteria D. Animals, plants and bacteria can all be infected by viruses.