Billy stepped on a beehive and got stung all over; now when he hears buzzing sounds, his blood pressure increases and he sweats.

Phobia.

Explanation:

Phobia may be defined as a type of anxiety disorder that are marked by the excessive and persistent fear of the situation or any object. This phobia might result in the sudden fear.

Melissophobia si known as the phobia of the bees. The individual develop a persistent fever on seeing the bees. As billy was once stunged by the hive. She has develop the extensive fear against the bees.

Thus, the answer is phobia.

step 1: initiation

initiation is the beginning of transcription. it occurs when the enzyme rna polymerase binds to a region of a gene called the promoter. this signals the dna to unwind so the enzyme can ‘‘read’’ the bases in one of the dna strands. the enzyme is now ready to make a strand of mrna with a complementary sequence of bases.

step 2: elongation

elongation is the addition of nucleotides to the mrna strand. rna polymerase reads the unwound dna strand and builds the mrna molecule, using complementary base pairs. there is a brief time during this process when the newly formed rna is bound to the unwound dna. during this process, an adenine (a) in the dna binds to an uracil (u) in the rna.

step 3: termination

termination is the ending of transcription, and occurs when rna polymerase crosses a stop (termination) sequence in the gene. the mrna strand is complete, and it detaches from dna.