What structure is often used to deliver copies of genes into cells?

Embryonic cells and cancer cells are similar because

A way for a new genetic characteristic to be introduced into a species is through

The main character / protagonist in “The Necklace” is Madame Forestier.  She is a rich woman who owns many fine necklaces and other jewelry.  

The husband, Mousier Loisel, has a job whereby he works:  

What fantastic social event does the married couple attend, where the husband eventually falls asleep BUT the wife stays awake all night?  

In “The Street-Sweeping Show,” which particular week is being celebrated?  

In “The Street-Sweeping Show,” how many dignitaries are in the story–helping to clean up the town?  

In “The Elephant,” which of the following is not true about the Zoological Gardens?

In “The Elephant,” the author includes two animals to add a humorous twist.  Which animals are added?