Discuss the ethical issues – both for and against – associated with PGD selection of savior babies
What will be an ideal response?
Couples have used IVF and PGD to have babies who were tissue-matched to siblings with leukemia and other diseases. In these cases, the embryos were not screened for genetic disorders— only for alleles that would allow the children produced from the embryos to serve as transplant donors for their siblings. These cases have reignited the debate on whether it is ethical to select for genotypes that have nothing to do with a genetic disorder and whether screening to benefit someone else is acceptable. Advocates of embryo screening to match transplant donors and recipients say that there are no associated ethical issues, but critics wonder if embryo screening for transplant compatibility will eventually lead to screening for the sex of the embryo or designer baby traits. A survey by the Genetics and Public Policy Center at Johns Hopkins University shows that 61% of Americans surveyed approved of using PGD to select an embryo for the benefit of a sibling, but it also revealed that 80% of those surveyed were concerned that reproductive genetic technologies could get out of control.
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Fermentation has a relatively low ATP yield compared to aerobic respiration because
A) more reducing equivalents are used for anaerobic catabolism. B) less ATP is consumed during the first stage of aerobic catabolism. C) oxidative phosphorylation yields a lot of ATP. D) substrate-level phosphorylation yields a lot of ATP.
Which of the following items can yield a significant amount of metabolic energy via cellular respiration?
What will be an ideal response?
________ can also be used to differentiate strains of microorganisms that differ in the antigenic composition of a structure or product.
Fill in the blank(s) with the appropriate word(s).
All of the following are correct about Tamiflu and Relenza except
A. they inhibit fusion and uncoating of the virus. B. they are used to treat infections by influenza A and B. C. they should be given early in an infection. D. they are effective prophylactics for influenza. E. they prevent assembly and release of the virus.