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This is a bit like asking "How long is a piece of string?" Are you asking about evolution from the emergence of life or the evolution of a single species?
Even the evolution of a single species can be different times, depending on the species. There is no hard-and-fast answer.
If you want a precise answer you will have to frame your question more precisely.
The whole process of evolution from the first emergence of life to now has taken some 3.8 to 4 billion years. The earth is about 4.5 billion years old. So it was lifeless for about half a billion years before the single-cell organisms started to emerg (very slowly).
With the fruit fly (Drosophilia) because they reproduce quickly many generations can be witnessed in a short while, changes in genetic coding can be observed over a couple of days. Scientists have managed to create mutations and grow limbs where antennae should be by adding or removing specific genes (HOX B I think it is). that is why drosophilia is used by evolutionary scientists. In humans gene coding can be a couple of generations see the way they breed dogs and animals for size and colour etc, it could take two generation for a gene to be altered.
by lovetherain2 years ago
Some people, like Richard Dawkins call evolution a "fact". What do you think? Is evolution a fact or a theory?
by Timothy Donnelly6 years ago
There’s a link below for starters, folks.Watch it first, and then go on with your reckoning. It goes by the title: The Fossil Record, Dr. Don Patton, Ph.D. It can be be seen on YouTube.com at this address:...
by janesix3 years ago
I have some questions about evolution.1. Random Mutation. Is it really random?"To determine how the bacteria had gained their tails, Dr. Xavier and his colleagues sequenced the DNA of 24 lines of hyperswarmers. In...
by Mark Knowles5 years ago
Some one just accused me of making a personal attack on them because I said they are ignorant of certain facts. Any one who has interacted with me here will know I try not to make personal attacks, other than to make...
by Captain Redbeard6 years ago
Is there room for evolution and Christian belief? Where Christians can't deny the age of the planet, Evolutionist can't prove the jumps they believe in. As far as I know there is no mixed belief system out there but...
by Jane@CM8 years ago
How long does it take you to adjust to major changes in your life. For example, unemployment, a child moving out, a child getting married, relocation, starting a new job, etc.I'm learning it takes me about 4 weeks...
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