Counter- The argument concerning rate of change assumes that biological evolution is described by a linear equation. However, observation and Mendellian genetics theory suggest that evolutionary change is better described by a rational function bounded by an assymptote. For example, it is relatively easy to crossbreed a pure bred dog so that you obtain a mutt or a nearly pure bred dog of another species. However, it will take an infinite amount of time to entirely replace the traits of the original breed with those of the new breed- the graph of evolutionary change, with change on the y-axis and time on the x-axis, has reached a horizontal assymptote. The dog remains a dog. | Counter- The argument concerning rate of change assumes that biological evolution is described by a linear equation. However, observation and Mendellian genetics theory suggest that evolutionary change is better described by a rational function bounded by an assymptote. For example, it is relatively easy to crossbreed a pure bred dog so that you obtain a mutt or a nearly pure bred dog of another species. However, it will take an infinite amount of time to entirely replace the traits of the original breed with those of the new breed- the graph of evolutionary change, with change on the y-axis and time on the x-axis, has reached a horizontal assymptote. The dog remains a dog. |