In lubeck, germany, in 1930, a group of 251 infants was accidentally administered a tainted vaccine for tuberculosis that contained live mycobacterium tuberculosis. this vaccine was administered orally, directly exposing the infants to the deadly bacterium. many of these infants contracted tuberculosis, and some died. however, 44 of the infants never contracted tuberculosis. based on your knowledge of the innate immune system, what innate defenses might have inhibited m. tuberculosis enough to prevent these infants from contracting the disease?
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Biology, 21.06.2019 20:50
Next pretest: evolution select the correct answer in a laboratory population of flies, the female flies are gray and the males are yellowish gray. biologists observed that all the male flies had an equal chance for reproduction, but the male flies with the brightest colors were more likely to successfully reproduce. what phenomenon could explain such a change? a sexual selection b. disruptive selection c. stabilizing selection d. directional selection
Answers: 1
Biology, 22.06.2019 14:00
If t=tall and t=short what will be the physical appearance of the offspring the cross below? a.some will be tall and some will be short b.they will all be tall c.they will all be short d.they will be medium height
Answers: 2
In lubeck, germany, in 1930, a group of 251 infants was accidentally administered a tainted vaccine...
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