When a tall homozygous plant was crossed with a short homozygous plant, the f1 offspring were all tall. no short plants were present in the f1 generation. which principle does this situation represent? the principle of unit characters the principle of dominance the principle of segregation

Body systems are not completely independent they integrate and work together describe one example of the integration between body systems

Which is an advantage of having memory cells when a pathogen is encountered for a second time. a) the memory cells are what proliferate into clones of cells in response to the binding of an antigen. b) memory cells are vital to the primary immune response in that they immediately recognize pathogens even at the first encounter. c) memory cells are essentially effector cells that are short lived and attack antigens even without having a receptor specific to that antigen. d) it ensures that more lymphocytes with a receptor specific to a particular antigen will be present than in a host that had never encountered that pathogen.

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.