The mechanism by which root tips sense gravity so that they can grow downward is best explained by the

The influenza virus cause the flu, but not other diseases. why?

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

20. in humans, freckles are dominant to no freckles. trey has no freckles and his wife anna grace has freckles, but her dad doesn't. they want to know what percentage of their kids would look like trey. show a punnett square to support your answer.