Ariel is excited that her baby chicks have finally arrived. She sets up a heat lamp to shine down on the chicks. Keeping the chicks warm helps them to keep comfortable and to grow well. Being warm also helps their immune system fight off infectious diseases. Ariel cleans and disinfects the chicks’ water dish every day. Why is it important to keep the chicks' water dish clean?

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.

on island x the species needed to adapt because they were being subject to predators which didn't inhabit island y.  

age of consent is a crime, regardless of whether the other person actually is.