In a wild-type strain of fruit flies, the length of a gene from the start to the stop codon is 2,000 DNA bases. Suppose an experiment indicated that the mRNA molecule transcribed from this gene is much shorter (only 1,200 bases) . What is the most likely explanation for this?
A) The first 800 bases of DNA are always cut out as it is transcribed into mRNA.
B) A mutation caused the formation of an extra stop codon in the gene.
C) There are introns in the DNA that were cut out of the mRNA.
D) The mRNA was prematurely degraded.
Correct Answer:
Verified
Q52: Which of the following contains codons?
A) Messenger
Q53: Which of the following attaches to specific
Q54: A mutation that results in a change
Q55: A tRNA that carries a specific amino
Q56: A tRNA molecule brings_ to the ribosome
Q58: Which of the following synthesizes RNA molecules
Q59: A random change in a DNA nucleotide
Q60: Which of the following binds to codons?
A)
Q61: A ʺmini-geneʺ has the base sequence TACCCGTGCACG.
Q62: Messenger RNA is single-stranded.
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