What applies to DNA base sequences?I. Some genes do not code for proteins.II. Promoters are transcribed along with the gene.III. Introns are only found within genes coding for proteins.A. I onlyB. II onlyC. II and III onlyD. I, II and II

The correct answer is A. I only.

Explanation:

I. Some genes do not code for proteins. This is true. Not all genes code for proteins. Some genes code for RNA molecules such as rRNA, tRNA, and microRNA.

II. Promoters are transcribed along with the gene. This is false. Promoters are DNA sequences located upstream of a gene that signal the start of transcription. They are not transcribed into RNA along with the gene.

III. Introns are only found within genes coding for proteins. This is false. Introns are non-coding sequences found within genes, but they are not exclusive to genes that code for proteins. They can also be found in genes that code for rRNA, tRNA, and other types of RNA.

The correct answer is A. I only.

Explanation:

I. Some genes do not code for proteins - This is true. Not all genes code for proteins. Some genes code for RNA molecules such as rRNA, tRNA, and microRNA.

II. Promoters are transcribed along with the gene - This is false. Promoters are DNA sequences located upstream of genes. They are not transcribed into RNA along with the gene. Instead, they serve as binding sites for RNA polymerase and other transcription factors to initiate transcription.

III. Introns are only found within genes coding for proteins - This is false. Introns are non-coding sequences found within genes, but they are not exclusive to genes that code for proteins. They can also be found in genes that code for rRNA, tRNA, and other types of RNA.