2. Draw the stages of meiosis. Label each stage. This imaginary organism has a chromosome number of 4 , or 2 pairs. Write the number of chromosomes and the "N" numbers next to each stage in the diagram. For this organism: 1N = 2 chromosomes and 2N = 4 chromosomes. (3 marks)

Biology help 16 (1-3) thanks

Cell Biology help

1) Define signal transduction, and why it is so important.
2) Explain what is meant by signal amplification.
3) Compare and contrast hormone receptors at the cell surface and those that are intracellular.

Flu viruses evolve rapidly.

How does evolutionary biology help us understand humans suffering from the flu virus? In other words, why do people get sick from flu? Can evolution help us explain why flu is prevalent in modern societies?

Human health and medicine. Methods and principles from evolutionary biology have contributed to understanding the links between genes and human genetic diseases.