Free Republic
Browse · Search
News/Activism
Topics · Post Article

To: SunkenCiv
"This means that the rate of speciation of cichlid fishes has been extremely rapid: something on average of one new species every 40 years!"
Surely his math is wrong? You cannot simply divide 300 species into 12,400 years. If one believes in random mutation then two species have twice the probability of speciation of one; three have three times the rate, four have four times the rate, etc. A bit like the grains of wheat on the chessboard, you could go from one to 300 in just eight or nine moves. That is 12,000 divided by 8 or 9 ≈ 1400-1500 years on average per (individual) speciation.
The timing of the very first random speciation could make a big difference to the outcome after 12,400 years.
IF one believes in random mutation, of course...
35 posted on 05/30/2018 1:16:52 AM PDT by Mr Radical (In times of universal deceit, telling the truth is a revolutionary act)
[ Post Reply | Private Reply | To 30 | View Replies ]


To: Mr Radical

There is also the need to standardize an exact definition of “species”. Do these Cichlid fish breed amongst each other? Can they interbreed? Is there an actual major genetic difference among the cichlids or are they actually sub-species.

It was even shown that although Darwin’s Finches did not like interbreeding with the other finch “species”, they were able to when reproductively isolated and produced variants mid way between the parent finches.

This is a very loose definition of species and can be used to prove almost anything in evolutionary terms.


36 posted on 05/30/2018 2:51:57 AM PDT by wbarmy (I chose to be a sheepdog once I saw what happens to the sheep.)
[ Post Reply | Private Reply | To 35 | View Replies ]

To: Mr Radical

If Evolution EVER worked; then it is STILL working today.

So just WHERE are all of these ‘mutated changes’ that should be all about us?

We’ve been told that most of these changes do NOT advance a specie; so where are today’s bad ones?


40 posted on 05/30/2018 3:53:30 AM PDT by Elsie (Heck is where people, who don't believe in Gosh, think they are not going...)
[ Post Reply | Private Reply | To 35 | View Replies ]

Free Republic
Browse · Search
News/Activism
Topics · Post Article


FreeRepublic, LLC, PO BOX 9771, FRESNO, CA 93794
FreeRepublic.com is powered by software copyright 2000-2008 John Robinson