Discuss the ethical issues – both for and against – associated with PGD selection of savior babies. What will be an ideal response?
ANSWER: 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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A co-evolutionary arms race is when a predator develops new traits in response to traits that have developed in their prey
If the Sierra newt produces a potent neurotoxin called tetrodoxotoxin that causes paralysis in animals that consume them, then a co-evolutionary response of their predators, the garter snake, might be: A. adaptation to a different food source B. developing the ability to produce a toxin that kills the newt C. increasing the speed at which the garter snake can sneak up on the newt D. developing resistance to tetrodoxotoxin
The FAB classification nomenclature for acute leukemia also appears under which WHO classification group?
All of these answers are true of inflammation except __________.
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