Evolution & natural selection | Heredity & Evolution | Biology | Khan Academy
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- เผยแพร่เมื่อ 1 ธ.ค. 2024
- Let's explore evolution by natural selection
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Created by Mahesh Shenoy
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What would have happened if the green colour beetle was eaten as a solo ... No matter a less probability but what if ??
Great question. Then those advantageous genes would, unfortunately, never get passed on.
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Thank you
Amazing teaching
Does anyone have a good resource for mutations?
I'll go in depth with mutations and the DNA.
Can the red beatles be seen again with the help of variations again???
ofcourse
Please make video on Lamarkisn
Hello sir
I have a doubt
Is it mutation that causes variation?
But in the case of red beetles cant we say that it had both the traits like the red and green?
But red being dominant and green was being recessive
And then as generation passed on obviously there was changes so colour changed to green
And with natural selection most of the red beetles were eaten
So the green beetle(solo) had to breed with red one
And it inturn would produce red and green beetles [genes and stuff]
So basically what i mean to say is green beetles were a result of the colour trait that was already present the red beetle
How dramatic can a mutation be according to evolution?
Hum, I'm not sure if it's really evolution, just mutation and adaptation.
What do you think?
first
Second
Third
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Sir mutation causes know variation?
why do you assume that mutations are random? who proved that and where?
Sir do these green and red beetles belong to different species
Just to point it out, isn't that definition of evolution, actually of natural selection?
Evolution is the creation of diversity out of existing species. Natural selection or selection of organisms acc. To nature. So natural selection is the ultimate cause of evolution
Survival Of The Fittest
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Where is the so called missing link? God created ALL! NOT BUYING IT!
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Eyes colur changes because of variations no because of mutation
Correct. But variations are caused by changes in DNA, which is called mutation.
Booshes😂😂😂😂
0:10 i have heard that hens are desendents of trex