Answer: Missense mutation
Explanation:
Missense mutation is a type of point mutation where a single nucleotide is changed to cause substitution of a different amino acid. This in turns render the resulting protein non-functional.
In the case of sickle-cell disease, the sixth amino acid in the gene sequence, glutamate (GAG) is substituted with valine (GUA), due to Adenine nucleotide changed to Uracil nucleotide. Thus, missense mutation has occurred
The answer is C. Genetic drift is the change of an allelic frequency due to random sampling in a population. When the brown and black bottles are preyed upon compared to the green bettles, their numbers in a population decrease. Therefore the next generations/offsprings of bettles population is more likely to be of green beetles since they will be more in the parent population. The allelic frequency of the allele for green bettles becomes higher than that of brown and black beetles. Eventually, after generations, the black and brown beetles may be eliminated from the population
Answer:
Penicillin.
Explanation:
Translation may be defined as the process of formation of protein product from the RNA molecule. The process of translation occur in the cytosol of the cell.
The process of translation may be inhibited by specific antibiotics at specific stages of translation. Penicillin does not inhibit translation. The mode of penicillin is to disrupt the bacterial cell wall synthesis.
Thus, the correct answer is option (C).
