Questions from Genetics

Q: According to the adaptor hypothesis, is each of the following statements

According to the adaptor hypothesis, is each of the following statements true or false? A. The sequence of anticodons in tRNA directly recognizes codon sequences in mRNA, with some room for wobble....

Q: Eukaryotic cells exhibit compartmentalization. Define compartmentalization. From Figure

Eukaryotic cells exhibit compartmentalization. Define compartmentalization. From Figure 3.1:

Q: In bacteria, researchers have isolated strains that carry mutations within tRNA

In bacteria, researchers have isolated strains that carry mutations within tRNA genes. These mutations can change the sequence of the anticodon. For example, a normal tRNATrp gene encodes a tRNA with...

Q: The covalent attachment of an amino acid to a tRNA is an

The covalent attachment of an amino acid to a tRNA is an endergonic reaction. In other words, it requires an input of energy for the reaction to proceed. Where does the energy come from to attach amin...

Q: The wobble rules for tRNA-mRNA pairing are shown in Figure

The wobble rules for tRNA-mRNA pairing are shown in Figure 13.12. If we assume that the tRNAs do not contain modified bases, what is the minimum number of tRNAs needed to recognize the codons for the...

Q: How many different sequences of mRNA could encode a peptide with the

How many different sequences of mRNA could encode a peptide with the sequence proline-glycine-methionine-serine?

Q: If a tRNA molecule carries a glutamic acid, what are the

If a tRNA molecule carries a glutamic acid, what are the two possible anticodon sequences that it could contain? Be specific about the 5′ and 3′ ends.

Q: A tRNA has an anticodon sequence 3′–GGU–5′.

A tRNA has an anticodon sequence 3′–GGU–5′. What amino acid does it carry?

Q: If a tRNA has an anticodon sequence 3′–CCI–5

If a tRNA has an anticodon sequence 3′–CCI–5′, what codon(s) can it recognize?

Q: Describe the anticodon of a single tRNA that could recognize the codons

Describe the anticodon of a single tRNA that could recognize the codons 5′–AAC–3′ and 5′–AAU–3′. What type(s) of base modification to this tRNA would allow it to also recognize 5′–AAA–3′?