3. MyoD is a transcriptional activator that turns on the expression of several muscle specific genes in human cells The Id gene represses the function of MyoD. There are 2 possibilities: 1. Id protein directly represses the expression of these muscle specific genes. 2. Id inhibits muscle specific genes indirectly by preventing MyoD's function. If you knew Id's protein sequence, how can you figure out if explanation 1 or 2 is true?

6. please match each of the item

I need help please

13)

Which of the following is NOT a DIFFERENCE between prokaryotic and eukaryotic gene regulation? A. prokaryotic mRNA is NOT capped by a 5’mG after transcription, but eukaryotic mRNA is so capped B.  eukaryotic mRNAs are monocistronic (encode single proteins), whereas prokaryotic mRNAs are polycistronic (encode multiple proteins) C.  prokaryotic mRNA is not modified by polyadenylation after transcription, but eukaryotic mRNA is so modified. D.  translation of eukaryotic mRNA into protein is not coupled to transcription of the mRNA from DNA, but in prokaryotes it is so coupled E.  prokaryotic translation and eukaryotic translation use different genetic codes to translate mRNA codons into amino acid sequences of proteins

1. Retrotransposons are nonviral genetic elements that facilitate their own movement within the genome (true or false) 2. Most mRNA molecules have an indefinite lifespan allowing high quantity protein synthesis from a single mRNA molecule (true or false) 3. spliceosome is a complex of RNA and protein that catalyzes the removal of exons from pre-mRNA (true or false)

1. What features of a protein-coding gene might be found in a non-coding gene? 2. What features are unnecessary in a non-coding gene?