Here, an enzyme such as DNA polymerase catalyzes a reaction in a first step and then checks that the product is correct in a second step. This two-step process results in average error rates of less than 1 error in 100 million reactions in high-fidelity mammalian polymerases.ere, an enzyme such as DNA polymerase catalyzes a reaction in a first step and then checks that the product is correct in a second step. This two-step process results in average error rates of less than 1 error in 100 million reactions in high-fidelity mammalian polymerases.
The correct answer is Mountains. Mountains can alter wind flow and create a rain shadow effect. A mountain is a large landform and is high surrounding a limited area. It is generally steeper and higher than a hill. Comments.
This weather pattern is highlighted on Monday afternoons radar image (above) where western areas experienced persistent rain and localised flooding, whilst eastern areas remained largely dry. So what caused such a noticeable difference across a relatively small geographical area? The Rain Shadow Effect. If an air mass is forced to rise, for example over a mountain range, it expands because of the lower pressure at higher altitudes and this expansion leads to cooling. RELATED: More wind and rain on the cards for the UK. Find out more.