Removal of introns and joining of exons in a defined order during transcription is called:
Correct answer: D. Splicing
- A. Looping
- B. Inducing
- C. Slicing
- D. Splicing
Explanation
Introns, which mainly occur in eukaryotes, are transcribed into messenger RNA (mRNA) but are then removed from the transcript before translation. In some cases, the removal of introns is an autocatalytic process (self-splicing) in which the RNA itself acts as an enzyme.
Last updated
About Chromosomes
Chromosomes are DNA-protein structures that carry genes and become visible during cell division. Coverage includes chromatin, centromeres, sister chromatids, homologous chromosomes, chromosome number, and the distinction between diploid and haploid cells, with links to DNA replication, mitosis and meiosis.
Practise Cell Structure and Function
2,478 free Cell Structure and Function MCQs from Biology, each with the correct answer and an explanation. Unlimited attempts, no account needed.
Exams that ask Biology questions like this
Biology is on 6 papers prepared for on TestUstad, and all of them draw the same bank, so this question is worth knowing for every one of them.
Related questions
1000-2000 Okazaki fragment:
200 nucleotide + 8 histones:
2n= 16 in a primary spermatocyte, which is in the metaphase of first meiotic division. What shall be the total number of chromatids in each of the secondary spermatocytes?
A 10 nucleotide sequence i.e., RNA primer is constructed by:
A cell contains 8 chromosomes in its diploid state.When this cell undergoes meiosis, its daughter cells would contain: