Q1. How does the theory of evolution explain superficial similarities between insect wings and bird wings? What is this resemblance an instance of? Why are the wings also different? Q2. In Guinea pigs, black hair (B) is dominant over white (b), rough coat texture (R) is dominant over smooth (r), […]

It is not normal to administer a pure drug to a patient. Almost all the drugs are administered in form of a medicine. A medicine is a mixture of one or more drugs combined or formulated with the other inactive materials known as excipients. Excipients themselves have no pharmacological activity however […]

1 What advantages do organelles provide to eukaryotic cells? Are they necessarily required or simply an artefact of the evolutionary history of eukaryotes? Why, for example, would eukaryotic cells require a membrane-bound nucleus when prokaryotes seem to replicate efficiently without one? 2. What are the 3 main intracellular transport mechanisms […]

A genetic disorder is sex-linked and is caused by a recessiveallele (e). The allele for the unaffected condition (E) isdominant. A woman who is a carrier of this disorder marries anunaffected man. The couple would like to have a child, but they areconcerned that their child will inherit the disorder. […]