Answer: Garbage collection has proven benefits, including fewer memory-related errors and reduced programmer effort. Garbage collection, however, trades space for time. It reclaims memory only when it is invoked: invoking it more frequently reclaims memory quickly, but incurs a significant cost; invoking it less frequently fills memory with dead objects. In contrast, explicit memory management provides prompt low cost reclamation, but at the expense of programmer effort.
Explanation:
The presence of a mutant lac repressor that could not bind lactose would result in no transcription even when lactose was present because the mutant repressor would remain bound to the lac operator
The transcription of lac operator is controlled by the lac repressor. When lactose is present, the lac repressor normally will bind to the lactose, removing itself from the lac operator so it could be transcripted.
In this case, the mutation makes the lac repressor keep binding to the lac operator so the result would be no transcription even when lactose present.
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But why? Why do you want to know who I am?
Answer:
The correct answer is polycistronic mRNA
Explanation:
There are two types of mRNA monocistronic and polycistronic. Monocistronic mRNA is the mRNA that codes for only one protein or polypeptide because it has single cistron. It is present in eukaryotes mainly.
A polycistronic mRNA has multiple cistron and codes for two or more proteins of polypeptides. Polycistronic mRNA is mainly found in prokaryotes. Prokaryotes have polycistronic mRNA because they are simpler than eukaryotes so only one promoter and operator is enough to translate multiple genes.