9. A food scientist baked one cookie dough sample at 350 degrees F for 13 minutes and a second sample at 375 degrees for 11 minutes. What is the
problem with the scientist's procedure?

There is no control.

Explanation:

If the scientist was testing something based on the different temperatures, they would need the amount of time in the oven to be the same for each cookie so that they can compare them. Without the times being the same, the scientist would not be able to tell whether the temperature or the time in the oven caused the differences in the cookies.

where is the diagram?

if you insert the diagram ill be able to you

a tetrad is the foursome during meiosis made by two homologous chromosomes that have each already replicated into a pair of sister chromatids.