Meiosis. Chromosome abnormalities usually happen as a result of an error in cell division. Meiosis is the name used to describe the cell division that the egg and sperm undergo when they are developing. Normally, meiosis causes a halving of chromosome material, so that each parent gives 23 chromosomes to a pregnancy.
        
                    
             
        
        
        
Answer:
In John Watson's Little Albert experiment, the white rat was stimulus associated specific entity and the loud noise was the associated stimulus.
 
        
             
        
        
        
Hello!
Could be either:
<span>The action or process of observing something or someone carefully or in order to gain information.
</span>
Or 
<span>A remark, statement, or comment based on something one has seen, heard, or noticed.
</span>
And in Science:
 <span>An 'observation' in the scientific sense, is when you make a measurement or evaluation of some sort. You would usually make a note of how something has changed sine the previous ovbservation. Maybe the temperature has changed: gone up one degree; or a crystal has grown: maybe it is now .1 centimeters longer. 
"Observations" usually implies that you are watching some process, and either measuring or noting the change that has taken place. usually you will also want to note the time of the observation, so that you can have an idea of how quickly (or slowly) the changes are occurring.
</span>
Hope this All Helps (Hope it did)! Have A Wonderful Day! :)
        
             
        
        
        
Answer;
-Synovial cavity 
Explanation; 
-The synovial cavity/joint is filled with synovial fluid. A synovial joint contains a synovial cavity and dense, irregular connective tissue that forms the articular capsule normally associated with accessory ligaments.
-A synovial joint occurs at articulating bones to allow movement. It is distinguished by a surrounding synovial capsule.The bones of a synovial joint are surrounded by a synovial capsule, which secretes synovial fluid to lubricate and nourish the joint while acting as a shock absorber.