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Introns can remain at a corresponding position in a eukaryotic gene for long periods of evolutionary time.

Introns can remain at a corresponding position in a eukaryotic gene for long periods of evolutionary time. Correct Answer True

The origin of introns in eukaryotic genes is not understood but has been accounted for by two models. The “introns-early” view proposes that introns were used to assemble the first genes from sets of ancient conserved exons, whereas the “introns-late” view proposes that introns broke up previously continuous genes by inserting into them.

Related Questions

Which of the following statements about gene therapy are correct?
P. Affected individuals, but not their progeny, can be cured through germline gene therapy.
Q. Affected individuals, as well as their progeny, can be cured through germline gene therapy.
R. Affected individuals, but not their progeny, can be cured through somatic gene therapy.
S. Affected individuals, as well as their progeny, can be cured through somatic gene therapy.
There are seven persons Amit, Roshan, Ravi, Priya, Amrita, Arpita and Mitul. They participated in a competition where they got different positions. Amit scored the first position while Mitul scored the last position. Priya scored fourth position from the last. Ravi scored one position higher than Priya while Amrita scored one position lower than Priya. Roshan scored higher position than five of them. Who scored the second lowest position?
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The assumption in this evolutionary model is that the amino acid substitutions observed over short periods of evolutionary history can be extrapolated to longer distances.
Comparative genomics includes a comparison of gene number, gene content, and gene location in both prokaryotic and eukaryotic groups of organisms.
H, Y, T, U and P got different ranks based on their marks in the semester examination and viva. H got 3rd rank in the semester exam and 5th rank in the viva. T got 5th position in the semester and 1st position in the viva. P got 2nd position in both exams and viva. Y got 1st position in semester examinations and 4th position in the viva. Who got 3rd position in the viva?
Ms. Forest likes to let her students choose who their partners will be; however, no pair of students may work together more than seven class periods in a row. Adam and Baxter have studied together seven class periods in a row. Carter and Dennis have worked together three class periods in a row. Carter does not want to work with Adam. Who should be assigned to work with Baxter?
Consider the following statements about the Stone Age in India: 1. Different periods are identified on the basis of the type and technology of stone tools. 2. There are no regional variations in the type and technology of tools in different periods. 3. Stone Age cultures of different periods evolved uniformly in a near unilinear fashion all over the subcontinent. Which of the statements given above is/are correct?
Which of the following statements is/are correct? 1. Gene Editing deals with inserting genes from other organism while Gene Modification deals with altering genes that exists already within body. 2. Gene Modification process is time consuming while Gene editing is faster. Select the correct answer using the code given below.
A gene that does not contain introns has an Eco RI site just down stream of the translational termination codon in the 3' untranslated region. The size of the gene is 4 Kbp. The length of 3' UTR is 2 Kbp, the 5' UTR is 1 Kbp and that the open reading frame is 1kbp. Upon probing a southern blot of an Eco RI digested genomic DNA with the radioactively labelled fragment containing only the open reading frame, the size of the band detected by hybridization would be