Draw conclusions: Each time you bred the parent chickens, you completed a trial. A trial is a single time that you conduct an experiment. Random chance often causes identical trials to have different outcomes.
Because of this, scientists repeat experiments many times in order to make sure that chance alone is not
responsible for the results of a trial.
How did your results change as the number of trials yớu completed increased? Why was it important for
you to breed the chickens repeatedly in this experiment?

i think it would be b. tissue because an organ system is a group of organs that work together to perform one or more functions. each does a particular job in the body, and is made up of certain tissues.

prophase: we can observe the chromosomes to coil up and condense. they become visible. nuclear membrane and envelope disintigrate.s

metaphase: chromosomes align at the center, the metaphase plate. spindle fibers attach to centromeres of the sister chromatids. they meet at kinetochores.

anaphase: sister chromatids are pulled towards each opposing centromere, set on different poles.

telophase: chromosomes are now clustered up only on either sides of the cell. nuclear membranes reform, and a new cell wall forms along the cell plate. this will lead to cytokinesis, the process that divides the cell membrane and forms the cell wall.