What does heterozygous recessive mean?

Robert wants to know which fertilizer will work the best for his grass. what can he do to explore this inquiry?

Why reason best illustrates why hershey and chase chose to use viruses in their experiment?

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