Tay Sachs disease is more common in people with a certain Jewish ethnic background because

Testing for a protein may help reveal whether or not an individual has a genetic disorder.

In fruit flys, long-wings (L) is dominant to short-wings (l) and a gray body color (G) is dominant to black body color (b). A heterozygous long-winged Drosophila female with a heterozygous gray body mates with a black, short-winged male fly. What is the phenotypic ratio of the offspring?

A positive genetic test for telomerase indicates that 

In fruit flies normal wings are dominant over vestigial wings. If a homozygous normal-winged fly and vestigial-winged fly were crossed, what would the phenotype of the fly offspring be?

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

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

One possible theme / takeaway from this story is that:  

At the end of “The Street-Sweeping Show,” the grandson tells asks his grandfather __________________________ and the grandfather answers back, _____________________________.    

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