What is an exon?

a part of dna that codes for a functional protein

a part of dna that does not code for a functional protein

the beginning part of the dna molecule

the end of part of the dna molecule

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.

Why has two different alleles for the same trait?

People with one sickle cell allele are not likely to get malaria. what is this an example of?