It is caused by crossing over in sexual reproduction and random mutations in DNA.
Heritable variation is the variation in characteristics caused by genetic factors.
it is caused when the variation is hit on the guitar
Genotypic variation is caused by mutation. Phenotypic variation can be caused by mutation, which gives rise to different alleles, or it can be caused by environmental factors.
A variation of a gene is called and allele. Different alleles are caused by mutations.
Temperature variation.
This is caused by refraction. A variation in air density corresponds to variation in refractive index of the air, locally near the road.
No, it is not.
Cross pollination, mutation and polyploidy lead to variations in the progeny
This is caused by people having sexual reproduction.
In process control.
They happen after the organism has been born, and often lead to tumours and cancer (caused by carcinogens). Other types of mutations can be caused by mutagens, which mutate the DNA of a cell. It doesn't affect the DNA of every cell in the organism/ reproductive cells, so isn't passed on to offspring
Calipers that are not operation correctly, dragging the brake pedal which then heats and could distort the discs, Slamming on the brakes. Any of the above are most likely why you have a variation in disc thickness