A mutation within a gene that will insert a premature stop codon in mRNA would ________
A) result in a longer polypeptide chain
B) result in a shortened polypeptide chain
C) change the location at which transcription of the next gene begins
D) have the same effect as deleting a single nucleotide in the gene
B
You might also like to view...
Predict how Pasteur's conclusions on spontaneous generation with swan flasks would have changed if he worked with and maintained the flasks in a sterile laminar flow hood
A) Sterilization of the swan flask solutions would not have been necessary to reject spontaneous generation. If he did sterilize the flasks, the spontaneous generation hypothesis would have been supported. B) His incubation times would not have been sufficient to refute spontaneous generation. C) Pasteur's flasks never would have putrefied, and the experiment would not have refuted spontaneous generation. D) Viruses would have still been present, and his conclusion would have been unchanged.
Define how the term "palindrome" is used in describing DNA sequences, and describe in one or two sentences a process/activity that depends on palindromic sequences
What will be an ideal response?
The hypothalamus and pituitary link the activities of the endocrine system and nervous system by
a. neurohormones being secreted in response to the summation of neural messages that enter the hypothalamus. b. shifts in hormonal concentrations being detected by the anterior pituitary. c. pheromones being secreted as a response to photoperiodic stimuli. d. the nervous tissue of the anterior lobe of the pituitary sending stimuli to the glandular tissue of the posterior pituitary to produce hormones that will be secreted by the hypothalamus. e. direct neural connections.
A part of the promoter, called the TATA box, is said to be highly conserved in evolution. Which of the following might this illustrate?
A. The sequence is transcribed at the start of every gene. B. Any mutation in the sequence is selected against. C. The sequence does not mutate. D. The sequence is found in many but not all promoters. E. The sequence evolves very rapidly.