Which of the following is a characteristic of rna splicing in eukaryotes?
a. exon/intron boundaries are typically characterized by a 5' gu splice junction and a 3' ag splice junction.
b. after splicing occurs, the u1, u2, u5, u6 snrnp complex removes remaining exons for degradation.
c. it involves removal of introns from a gene sequence followed by transcription and subsequent splicing of exons.
d. it involves recognition of sequence-specific intron/exon boundary sites by cytoplasmic proteins.

The correct answer is a. Exon/intron boundaries are typically characterized by a 5' GU splice junction and a 3' AG splice junction.

Explanation:

Splicing is the process in which the non-coding introns are removed from the mRNA and only coding sequences remains in mRNA.  

The splicing of introns depends on the recognition of splice site pair. Usually, 5'-GU-3' is 5' splice site and 5'-AG-3' is 3' splice site which makes the boundary of introns/exons and these two nucleotides are important to recognize the introns.

There are some additional conserved sequence at these two splice site which help in recognition of introns. First, a lariate structure is formed when 5'-GU-3' is cleaved and joined to the branch point that is present near 3' slice site. Then 3' splice site is cleaved which releases the intron. Therefore the correct answer is a.

lipid

explanation:

population. population is the number of people or animals in a particular place. an example of population is over eight million people living in new york city.

here is your answer hope i .