Which type of system is shown below?

How does the study of genetic disorders such as pku biologists understand normal alleles?

Look at the photo of the leaf. which term best describes this leaf?

The fruit of a certain plant is sweet and fleshy. the seeds of this plant have a seed coat that is fairly tough. the seeds germinate better if they are exposed to acid, or scarification. what is the most likely type of dispersal for this seed? water animal wind