Title: Do you feel that viruses show speciation, and do you consider viruses like the smallpox virus to be ... Post by: tyrich on Mar 31, 2018 Do you feel that viruses show speciation, and do you consider viruses like the smallpox virus to be an
endangered species? What will be an ideal response? Question 2 How is it that prezygotic isolating mechanisms can often be bypassed in human controlled breeding experiments? What will be an ideal response? Title: Do you feel that viruses show speciation, and do you consider viruses like the smallpox virus to be ... Post by: tvincent on Mar 31, 2018 It really boils down to whether you consider viruses as living or non-living. Many scientists categorize them as an intermediate category between the living and non-living. If you consider viruses as alive, they mutate frequently so you could consider that as speciation. Also if you consider viruses as living things, I suppose the smallpox virus is endangered since it is not present in the environment currently. ANS:Prezygotic isolating mechanisms generally arise incidentally owing to species adapting to different environments or environmental factors. The do not evolved specifically to isolate the species, and if forced, two species otherwise separated may produce perfectly fertile offspring. Temporal isolation, for example, might be overcome by cold-storage of sperm or pollen for artificial insemination or pollination later in the season. Mechanical isolation due to differences in genital structure might be also be bypassed by artificial insemination. In orchids, species are isolated primarily by being adapted for pollination by specific species of insect, but humans can freely cross-pollinate species within, and in some cases, between genera, resulting in a vast array of hybrids. Title: Do you feel that viruses show speciation, and do you consider viruses like the smallpox virus to be ... Post by: tyrich on Mar 31, 2018 Cheers!!
Title: Do you feel that viruses show speciation, and do you consider viruses like the smallpox virus to be ... Post by: tvincent on Mar 31, 2018 Cheers too :thumbsup:
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