Julia had a sibling who died because of a genetic disease as an infant. before having children, she and her husband tobias get genetic testing and counseling. they are unlucky. for the gaa gene, julia has one normal allele and one totally non-functional allele. tobias has one normal allele and one totally non-functional allele. if any of their offspring test positive for pompe disease, when are symptoms likely to develop (remember, both parents have one non-functioning allele, 0%gaa)?

I believe its Before the age of nine monits. I could be wrong tho

it cools slower in the earth meaning the crystals have more time to form than lava on the surface

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.