2c would be transcription because it is the first step in building proteins. and 3 would be translation because the information is being carried to mRNA
The observation that is most likely to have led her to form this hypothesis is the fact that flies with long wings can produce offspring with short wings. Recessive traits are the traits that are carried in a person genes without appearing in that particular individual. For example, a dark haired person may have one gene for dark hair, which is a dominant trait, and one gene for light hair, which is recessive.
It sends an electrical impulse to make your heart beat. The job of a pacemaker is to artificially take over the role of your sinus node if it isn't working properly. Electrical impulses are sent by the pacemaker to stimulate your heart to contract and produce a heartbeat