The interaction between bases on different strands of DNA molecules depends somewhat on the identities of neighboring bases. For example, the melting temperature of an oligonucleotide with the sequence 5′-GGGGGAAAAA-3′ is different than that of 5′-GAGAGAGAGA-3′ even though both contain the exact same number of G-C and A-T base pairs. […]

Q. The peppered moth provides a well-known example of natural selection. The light-coloured form of the moth was predominant in England before the industrial revolution. In the mid-nineteenth century, a dark-coloured form appeared. The difference is formed by a dominant allele of one gene. By about 1900, around 90 percent […]

Q1. Compare and difference wave summation with recruitment. How are they similar? Describe how wave summation and recruitment are achieved in the body. Q2. Consider the changes that occurred both structurally and functionally as plants evolved to their modern forms. If you were to discover a totally new plant to […]

Module 2 – SLPChronic Stress and Behavioral Response Note: If you have trouble viewing some of the course materials, install Quicktime and the Adobe Shockwave Player, both of which can be downloaded free from the Internet. Continue your investigation of the effects of stress on brain function and behavior. Read […]