When possible, scientists test their hypotheses using controlled experiments. A controlled experiment is a scientific test done under controlled conditions, meaning that just one (or a …

In an observational study, we measure or survey members of a sample without trying to affect them. In a controlled experiment, we assign people or things to groups and apply some …

Scientists form hypotheses based on these observations and then develop controlled experiments to collecting and analyze data. Using this data, they are able to draw conclusions and form …

You can't be expected to come up with an accurate hypothesis every time, this is why you have to do observations and/or experiments to test the hypothsis.

A The facts collected from an experiment are written in the form of a hypothesis. B A hypothesis is the correct answer to a scientific question. C

The more traits you have, the more complicated our experiments become. The more difficult it becomes to keep track of them. But if you just have two traits, perfect. And that's why Mendel …

To avoid errors, researchers may randomly divide subjects into control and experimental groups. Both groups should receive a treatment, like a pill (real or placebo), to counteract the placebo …

We haven't actually run the experiment, but it's a good one, because we can construct an experiment that tests this very well. Now, what would be an example of a bad hypothesis or of …

Perhaps most importantly, Neurospora cells could be grown in the lab on simple medium (nutrient broth or gel) whose chemical composition was 100% known and controlled by the experimenter.

As it turns out, both pea plant height and human height (along with many other characteristics in a wide range of organisms) are controlled by pairs of heritable factors that come in distinctive …