Discussion: Symbiosis between bacteria and other species. Some bacteria can harm other organisms. However relations between certain bacteria and particular species can be cooperative. That’s our topic for this discussion. Pick one of the following topics and write a primary post of at least 125 words addressing that topic. Also, […]

1. In a concise table/chart compare the significant similarities, differences, cells, functions of the “Innate” and “Adaptive Immune Response.2. Describe the similarities and the differences between B and T-cell antigen receptors.3. What are the MHC molecules and what role(s) do they have in activation of antigen specific cells.4. How is […]

The table below gives the Z scores for four different marker loci (A, B, C and D) with respect to possible linkage to a monogenic, fully penetrant trait. E 0 0.05 0.1 0.15 0.2 Z(A) -3.0 -2.0 -1 0 0.3 Z(B) 0.1 0.2 1.0 0.6 0.3 Z(C) 4.0 3.0 2.0 […]

Q1. Johnny, a 5-year-old boy, has been growing by leaps and bounds; his height is 100 percent above normal for his age. He has been complaining of headaches and vision problems. A CT scan reveals a large pituitary tumour. 1) What is the possible cause of the excessive growth? 2) […]