A
This will, well into the foreseeable future, be a much much poorer world economy. There just won't be the resources available to dedicate to pure science or even development of practical ideas.
I disagree. The vast majority of commercial and industrial products we have today did not develop from what you refer to as "pure" research. The vast majority of today's consumer and industrial goods came from commercial laboratories, not government-funded research institutes or university labs. Where goes the funding, so goes development.
Take a look at two differing OTL technology sets -- the space industry and computer technology. In space, you have an almost-entirely government-run system of operation. You have things like the International Space Station, a monumental succes, but only in comparison to the complete lack of progress in other areas. You've got the space shuttle, a twenty-year-old piece of equipment made in a thirty-year-old design and the Soyuz spacecraft, similarly ancient. The most spectacular achievement in space -- the network of thousands of communications satellites orbiting the Earth -- is almost entirely the product of commercial ventures.
Now examine the computer industry. At first, you had a few small, government-run projects (Colossus, ENIAC, DARPAnet -- they're not contemporaries, but they illustrate the government-funded first stage of development). However, unlike the space program, the computer industry didn't stay restricted by government. Companies like IBM, Apple, Commodore, Dell, and hundreds of other household names picked up that technology and ran with it. Though governments funded the initial steps, it is thanks to commercial progress that we have today's Internet and a computer in (nearly) every household, not to mention dedicated computers in nearly every bit of consumer technology sold today. Without that commercial interest, we'd be where we were in the early 1980s, stuck with slow, balky machines attached to a slow, university and government-funded limited network.
The comparisons don't stop there -- examine the differences between the jet engine and the nuclear reactor. Both were developed at roughly the same time, but only the commercial product -- the jet engine -- can be seen everywhere in the world. The nuclear industry, on the other hand, was largely limited to government and very limited commercial use. When restrictions on nuclear reactors were relaxed, you got the TRIGA, the most profitable nuclear reactor in the world. There were more of those produced than every other nuclear reactor type in the world. Combined. And it was a commercial, not governmental venture.
Basically, this all boils down to a single argument -- technological development doesn't come so much from government-funded labs, but from the massive investment that comes from the commercial sector of a free economy. Far more money is available from the commercial sector than the government sector. Kids dream of becoming rock or sports stars -- they don't dream of becoming government bureaucrats.
The development of Polymerase Chain Reaction is. PCR revolutionized genetic science, and likely put us a few decades ahead of where we'd be without it. However, it was the brainchild of one guy who was studying thermophile bacteria. I have a hard time imagining that there will be a lot of people ITTL with enough funding to go off studying hot springs bacteria (raditation resistant bacteria, sure, but not hot springs stuff). Therefore I think it highly likely that we do not see PCR developed until much, much later than OTL, and thus genetics too will be slowed in its developments.
And of course, that development came from a commercial lab -- that of the Cetus Corporation in California, not from a government lab.
Without PCR being developed as early as it was, yes, the study of genetics will be retarded greatly. But who's to say that you won't get an equally-fundamental breakthrough in some other area of genetics as a butterfly from the war? We simply can't predict such things. It's easy to say that something won't happen (and I agree with you that it won't happen the way it did in OTL), but it's nearly impossible to say that something
will happen in a certain way this far from the POD.
Forex, we could easily have someone make a breakthrough with
D. radiodurans far earlier than in OTL. After all, it was discovered in 1956, and I can easily see a commercial lab trying to splice that radiation resistance into crops. The payoff would be in the billions of dollars -- imagine vast fields of radiation-resistant grain growing across the blackened soils of Russia and Europe. You're going to see millions thrown at this and other problems that aren't present in OTL (water and air filtration, environmental recycling, and others) and many of these projects will create breakthroughs that again, aren't present in OTL. Even with the "brain damage" (if you'll allow me to coin a phrase) of thousands of scientists killed, you can't stop progress.
It's just silly to say that
everything is going to be retarded technologically.