CBSE Tutorials

EVOLUTION We have noted that there is an inbuilt tendency to variation during reproduction, both because of errors in DNA copying, and as a result of sexual reproduction. Let us now look at some consequences of this tendency. An Illustration Consider a group of twelve red beetles. They live, let us assume, in some bushes…

How do these Traits get Expressed? How does the mechanism of heredity work? Cellular DNA is the information source for making proteins in the cell. A section of DNA that provides information for one protein is called the gene for that protein. How do proteins control the characteristics that we are discussing here? Let us…