How does a stem cell become specialized into a heart cell?

Agene with the original sequence of atgtt—tact underwent substitution mutation to form atatt—tact after a few generations. tact is a part of a muscle protein encoding region, and atgtt codes for a digestive enzyme. what will be the effect of this mutation? a. the production of muscle protein will be affected. b. the production of digestive enzymes will be affected. c. the production of both the protein and the enzyme will be affected. d. the production of neither the protein nor the enzyme will be affected.

Hummingbirds drink nectar from flowers, while robins eat plant seeds. what does this reduce?

Most animal cells membranes have proteins that pump ions out of the cell and potassium ions into the cell