Which experimental design decision would most likely produce invalid and unreliable results? having more than one controlled variable
having only one control group
having more than one independent variable
having only one experimental group

Explanation:

The independent variable determines the value that needs to be calculated or the decision that needs to be made from the observations of the experiment. Hence, experimental design decision would most likely produce invalid and unreliable results when having more than one independent variable.

due to the fact that it skipped a generation we can tell it is definitely not a dominant trait, therefore it must be recessive. i think this is right let me know!

explanation: