Why, the lactase must be active in every milksot and in every sucker.
Wiped out by a tragic lab accident if I'm not mistaken.
3000 years ago? What has evolution done for us lately?
Lactose tolerance falls a little short of deriving a new species, but those Darwinists will take what they can get.
I, for one, can see how human development of tolerance for lactose demonstrates a process by which humans could have easily developed from single cell organisms. How could I have ever had any doubts.
Now, at last, I know what "The lacteal fluid extracted from the female of the bovine species is highly prolific to the Nth degree", was referencing...
I drank lots of milk as a kid without any problem. In recent years, it's a risky endeavor.
Does this mean I'm devolving??!
All I can say is 'MOOOOOOOOOOOO'.
Wake me up when I develop X-ray vision
Why would 'natural selection' favor someone who could drink milk?
There is a significant amount of genetic variation between different etnic groups of humans. Blonde hair and blue eyes were and are a favorable mutation for northern European populations. Why? The paler complexion is more favorable to the absorption of UV light, needed for Vitamin D production.
However, for populations living in tropical regions, a dark skin is a favorable genetic variation. Why? For protection against much higher levels of UV light.
When the gene for sicle cell anemia is heterozygous, the gene offers some protection against malaria. However, when the individual is homozygous for the trait, the person develops sicle cell anemia, a potentially fatal disease.
In general, populations from Northern Europe, cary the gene variation for digesting lactose. The European populations had a greater need for milk, to supply the needed nutrients for producting vitamin D. However, populations from tropical regions had less need for the ability to consume milk, because they receive a lot more sunlight.
Sigh. Is it also evolution when farmers select out sheep for their capacity to "twin" and double his production? It sure didn't take 3K years to manage that...
If it's 3000 years ago, why does the Bible describe Canaan as a "land flowing with milk and honey"? Doesn't that quotation predate 1000 BC?
OK, just one question: Why did our ancestors bother to domesticate milk cows, when they couldn't digest the milk in the first place? Did they know that some day, they would become lactose tolerant? If this is evolution, wouldn't that mean our ancestors had to be drinking milk, as adults, for a long time, in the hope that some day their children, or grandchildren, etc, would mutate that gene? Wow, our ancestors were VERY forward thinking.
It's very easy to spot evidence of recent human evolution. Some humans evolved...the rest remained democrats.
This is a sample of the kind of evolution very few will argue with. Although I don't know that the word "mutation" would be accurate. All people are slightly different in some ways. If something happened in our environment that favored people less than 5 feet tall, the population would shrink in height in a few generations. If something happened to suddenly favor those over 6' in height, the general population would increase again in height in a few generations.
It is not evolution of the individual members of the populateion that is happening. It is simply a change in the numbers of a particular subgroup that was always there - and still is. It just became the dominant group.
Same thing here. If something happened to our environment that suddenly made it deadly to adults that could digest milk, in a few generations, the general population would again be unable to digest milk.
This isn't the type of evolution that stirs the fun debates here. ;)
That would be MICROGenetic alterations. Evolution doesn't exist, happen or be reality.
Gosh. At this rate, in a gazillion years or so, we're all probably gonna be milk cows!
Hey! Does that mean it turns out that the Hindus were right?!
/s (added for the benefit of those lacking a sarcasm detector...)