You have three groups of guinea pigs, ones from inbred strain A, ones from inbred strain B and guinea pigs that are the F1 progeny of matings between A and B guinea pigs. All guinea pigs are infected with a newly-evolved version of LCM virus. TC cells from an F1 hybrid guinea pig could attack infected cells from .

the pic attached shows the stages of mitosis. hope it !

weathering - colorado river carves land in arizona to form the grand canyon. cracks form in a sandstone wall surrounding a house. a marble statue near the science museum is changing color due to rainfall

erosion - after a rainstorm, soil and rock piees litter the roadways. the sand dunes in the sahara desert are changing shape.

here's your answer.

some inherited genetic mutations can be good for the offspring, so the answer is different genetic mutations cause many forms of cancer.