In genetic code, how many codons code for the amino acid tryptophan? MCQ with Answer and Explanation

Explanation:
August Weismann proposed the germ plasm theory, stating that only changes in germ cells (sperm/egg) are inherited, not somatic changes. He cut off tails of mice for many generations but offspring had normal tails, disproving inheritance of acquired characters.

Explanation:
Daniel Koshland proposed the induced fit model (1958), where enzyme active site changes shape upon substrate binding. Fischer had proposed lock-and-key.

Explanation:
The degeneracy of the genetic code refers to the fact that most amino acids are specified by more than one codon. For example, leucine is coded by six different codons (UUA, UUG, CUU, CUC, CUA, CUG). This redundancy is primarily due to the 'wobble' hypothesis, where the third base of the codon can have non-standard base pairing with the first base of the anticodon, allowing a single tRNA to recognize multiple codons.