Why don't individuals with Tay-Sachs pass on the Tay-Sachs allele?
a
Tay-Sachs disease is a recessive human genetic
disorder.
b Carriers are not affected.
c Affected individuals do not have children.

Which of the following produces carbon dioxide? a. plants b. animals c. decomposers d. all of the above

Agroup of students is studying convection currents. they fill two identical balloons with the same amount of helium. one balloon is placed in a freezer and the other in an area with warm air. after 10 minutes, the balloons are released from a height of 1 meter. which of the following do the students most likely observe? question 8 options: the cold balloon expands and rises. the warm balloon shrinks and sinks. the balloons rise at the same rate. both balloons are the same size. the ballons both rise. the cold ballon is larger than the warm balloon. the warm balloon expands and rises. the cold balloon shrinks and sinks.

Agene editing technology called crispr-cas9 uses cellular machinery to change the cell's genetic material. how might this technology be useful in treating diseases like cancer?