Examlex
Which of the following is an extraembryonic tissue that burrows into and thus attaches to maternal tissues?
Control Group
In experimental research, a group that does not receive the experimental treatment and is used as a benchmark to measure the effects of the treatment.
Basic Experimental Design
The fundamental structure of an experiment that outlines how to systematically test a hypothesis by manipulating variables and controlling conditions.
Randomly Assigning
The process of distributing subjects into groups in a way that each subject has an equal chance of being in any group.
Observing Participants
A research method that involves actively watching and sometimes interacting with participants in their natural settings to gather qualitative data.
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