Some investigation require control such that they can be able to compare results to a sample even without any of the independent variable which is being added.
Investigation is the act of investigating someone or something. Investigation can work for private investigator. There are different types of investigation. For example, Griffin investigation, Criminal investigation department, Federal Bureau of investigation.
To find the probability we can draw a 4-square Punnett square using the parents' alleles for the gene. If you want a more detailed explanation I would be glad to help :)
