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Hunting has given elephants that didn't grow tusks a biological advantage in Gorongosa, as Poole explained, because poachers focus on elephants with tusks and spare those without.
ukimalefu wrote: African elephants are evolving to not grow tusks because of poachersHunting has given elephants that didn't grow tusks a biological advantage in Gorongosa, as Poole explained, because poachers focus on elephants with tusks and spare those without.
TOS wrote:ukimalefu wrote: African elephants are evolving to not grow tusks because of poachersHunting has given elephants that didn't grow tusks a biological advantage in Gorongosa, as Poole explained, because poachers focus on elephants with tusks and spare those without.
blatherskite, lysenkoism was refuted decades ago
ukimalefu wrote:TOS wrote:ukimalefu wrote: African elephants are evolving to not grow tusks because of poachersHunting has given elephants that didn't grow tusks a biological advantage in Gorongosa, as Poole explained, because poachers focus on elephants with tusks and spare those without.
blatherskite, lysenkoism was refuted decades ago
had to google it, still not sure if you're joking or not
just forget about the evolution thing
fiddlesticks those elephant killers
TOS wrote:ukimalefu wrote: African elephants are evolving to not grow tusks because of poachersHunting has given elephants that didn't grow tusks a biological advantage in Gorongosa, as Poole explained, because poachers focus on elephants with tusks and spare those without.
blatherskite, lysenkoism was refuted decades ago
Elephant tusks are teeth.TOS wrote:ukimalefu wrote: African elephants are evolving to not grow tusks because of poachersHunting has given elephants that didn't grow tusks a biological advantage in Gorongosa, as Poole explained, because poachers focus on elephants with tusks and spare those without.
blatherskite, lysenkoism was refuted decades ago
Metacell wrote:TOS wrote:ukimalefu wrote: African elephants are evolving to not grow tusks because of poachersHunting has given elephants that didn't grow tusks a biological advantage in Gorongosa, as Poole explained, because poachers focus on elephants with tusks and spare those without.
blatherskite, lysenkoism was refuted decades ago
?? Elephants without tusks are more likely to live long enough to breed.
TOS wrote:Metacell wrote:TOS wrote:ukimalefu wrote: African elephants are evolving to not grow tusks because of poachersHunting has given elephants that didn't grow tusks a biological advantage in Gorongosa, as Poole explained, because poachers focus on elephants with tusks and spare those without.
blatherskite, lysenkoism was refuted decades ago
?? Elephants without tusks are more likely to live long enough to breed.
1. does the dna of elephants understand that tusks are the reason why they're being shot?
2. evolution is a process that takes countless generations for even the slightest change to become hereditary
People that do not succeed in politics usually tell the truth too often.
TOS wrote:Metacell wrote:TOS wrote:ukimalefu wrote: African elephants are evolving to not grow tusks because of poachersHunting has given elephants that didn't grow tusks a biological advantage in Gorongosa, as Poole explained, because poachers focus on elephants with tusks and spare those without.
blatherskite, lysenkoism was refuted decades ago
?? Elephants without tusks are more likely to live long enough to breed.
1. does the dna of elephants understand that tusks are the reason why they're being shot?
2. evolution is a process that takes countless generations for even the slightest change to become hereditary
TOS wrote:Metacell wrote:TOS wrote:ukimalefu wrote: African elephants are evolving to not grow tusks because of poachersHunting has given elephants that didn't grow tusks a biological advantage in Gorongosa, as Poole explained, because poachers focus on elephants with tusks and spare those without.
blatherskite, lysenkoism was refuted decades ago
?? Elephants without tusks are more likely to live long enough to breed.
1. does the dna of elephants understand that tusks are the reason why they're being shot?
2. evolution is a process that takes countless generations for even the slightest change to become hereditary
Well then thank God that elephants have only been getting hunted during this generation.TOS wrote:Metacell wrote:TOS wrote:ukimalefu wrote: African elephants are evolving to not grow tusks because of poachersHunting has given elephants that didn't grow tusks a biological advantage in Gorongosa, as Poole explained, because poachers focus on elephants with tusks and spare those without.
blatherskite, lysenkoism was refuted decades ago
?? Elephants without tusks are more likely to live long enough to breed.
1. does the dna of elephants understand that tusks are the reason why they're being shot?
2. evolution is a process that takes countless generations for even the slightest change to become hereditary
Evolutionary change is based on changes in the genetic makeup of populations over time. Populations, not individual organisms, evolve. Changes in an individual over the course of its lifetime may be developmental (e.g., a male bird growing more colorful plumage as it reaches sexual maturity) or may be caused by how the environment affects an organism (e.g., a bird losing feathers because it is infected with many parasites); however, these shifts are not caused by changes in its genes. While it would be handy if there were a way for environmental changes to cause adaptive changes in our genes — who wouldn't want a gene for malaria resistance to come along with a vacation to Mozambique? — evolution just doesn't work that way. New gene variants (i.e., alleles) are produced by random mutation, and over the course of many generations, natural selection may favor advantageous variants, causing them to become more common in the population.
New gene variants (i.e., alleles) are produced by random mutation, and over the course of many generations, natural selection may favor advantageous variants, causing them to become more common in the population.
NASA's InSight lander is scheduled to touch down on Mars at approximately 3 p.m. EST, Monday, Nov. 26.
TOS wrote: if you have a population of elephants and you only kill the ones with tusks, have you changed their dna?
Séamas wrote:TOS wrote: if you have a population of elephants and you only kill the ones with tusks, have you changed their dna?
???
You just let the ones with the "no tusk" mutation breed and pass on their DNA.