Some traits are the result of complex interactions between organism's DNA, environmental factors and individual choices.
Look at experiment #1. How did sleep affect dog's weight. Give evidence from the data.
Look at experiment #2. How did diet affect a dog's weight? Give evidence from the data.
Look at experiment #3. How did exercise affect a dog's weight? Give evidence from the data.
Environmental factors can affect the expression of certain traits that are inherited
A scientist wants to investigate how sleep, diet and exercise impacts a dog's weight. Should the scientist change all three variables at once?
A scientist wants to investigate how sleep, diet and exercise impacts a dog's weight. Should the scientist use dogs that are the same age and breed?
A scientist wants to investigate how sleep affects a dog. The scientist restricts sleep but keeps the dogs diet and exercise the same. What is the independent variable (variable that is changed?)
A scientist wants to investigate how sleep, diet and exercise impacts a dog's weight. The scientist controls how many calories the dogs get and keeps the amount of sleep and exercise the same. What is the dependent variable (what the scientist is measuring?)
Does the data make sense?
What might happen if you fed a dog a 500 calorie daily diet?
What could prevent a dog who exercises a lot (90 mins per day) from losing weight?