-
Looking for HSC notes and resources? Check out our Notes & Resources page
Mutations And Crossing Over (1 Viewer)
- Thread starter helpme04
- Start date
Mutations and crossing over results in the formation of new variations in species. This is important, as the new variations may possess characteristics which give the species an advantage for survival.
A classic example - pepper moths in England. (happy, xiao?
) They are usually white, which allows them to blend into snow-covered and light coloured trees. However, there is a mutated form which is black. The Industrial Revolution caused many trees to turn black. This gave the mutated 'black' species an advantage. They were able to survive, as they were not spotted by predators. They survived, thrived and multiplied, forming a new, more common variation of the species with a new advantage.
Hope that helped. I'm also moving this thread to the appropriate section.
A classic example - pepper moths in England. (happy, xiao?
) They are usually white, which allows them to blend into snow-covered and light coloured trees. However, there is a mutated form which is black. The Industrial Revolution caused many trees to turn black. This gave the mutated 'black' species an advantage. They were able to survive, as they were not spotted by predators. They survived, thrived and multiplied, forming a new, more common variation of the species with a new advantage.Hope that helped. I'm also moving this thread to the appropriate section.
Last edited:
tiger moth??? i thougth twas pepper moth???
and an other interesting thing to note: mutation is the only way which variation can be obtained in the unicellular organisms such as bacteria ... as their daughter cells are genetically idential.... so mutation is the only way to acheive variation...
and an other interesting thing to note: mutation is the only way which variation can be obtained in the unicellular organisms such as bacteria ... as their daughter cells are genetically idential.... so mutation is the only way to acheive variation...
Tommy_Lamp
Coco
pretty much comes down to genetic variability producing characteristics that can prove advantageous, hence advancing a species, eg. peppered moths