What is a group of people with inherited physical characteristics that distinguish it from another group?

If assuming tasting ptc as a simple gene trait,what other genotype would you select to put in this missing genotype box that could result in this phenotype

Do you think the gene eef1 alpha1 supports cell theory? explain your response.

The hematodinium parasite becomes less of a problem for the blue crab when the crab is very young. fishing is thriving in the region. the crab moves to less salty water. a significant percentage of the population is impacted.