Nondisjunction is when chromosomes fail to separate completely during meiosis. This results in a three parted chromosome called a trisomy which is a type of aneuploidy, or a state of possessing a number of chromosomes different than the multiples of the haploids.
        
             
        
        
        
Answer:
To answer the question of part a. The importance of the Grand Canal is to transport of agricultural production from the south to the north and helping to unify the economy of China
To answer the question of part B. The Grand Canal helped the transfer of ideas and commerce because it was faster and easier to travel from place to place than on foot.
I hope I helped.
Brainliest would be appreciated.
Explanation:
 
        
                    
             
        
        
        
I believe the answer is  certificate<span> chaining
</span> certificate<span> chaining refers to the process of verification that rely on the usage of more than one authorization.
</span>This process is widely used in corporations to protect the company against potential data theft.
        
                    
             
        
        
        
Answer:
To establish how the setting creates obstacles for the characters
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Explanation:
Ernest H. Griffin's "The Oasis: Africa," tells a thrilling story of a desert journey and how rough and severe nature can be to travelers in a desert. Deprived of the basic necessities especially water, the discovery of an oasis in the desert brought a huge relief to the characters.
The author starts the story by narrating or describing the landscape of the place where they are starting their journey. Normally, settings or in this case, descriptions of the landscape allows the readers to get a sense of where the story takes place. Moreover, the inclusion of details about the hardships that the narrator encounters also adds to this image of what the scene most looks like. And so, this <u>reveals how the setting creates the obstacles that the characters will be met with.
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