Acetylcholine binds to a GPCR on heart muscle. The activated receptor stimulates a trimeric Gi protein, which opens a K channel in the plasma membrane. Following stimulation with Acetylcholine, what impact on heart rate would you expect from each of the following?

Generates a reduction in heart rate.

Explanation:

These channels, initially called K (Ach), slow the pacemaker cell's depolarization and decrease the heart rate.

the father in the first generation probably had the recessive colorblind trait in his x chromosome. if he and his wife both had the colorblind trait, even if she had 1 recessive and 1 dominant, then that trait would be passed on to their kids.

(since you didn't attach the family tree this is just an assumption)