In: Biology
Answer 1) false, the length of linker of nucleosome is not constant in all organisms. because Linker DNA length ranges between ~20–90 bp and varies among different species, tissues, and even fluctuates within a single cellular genome.
Answer 2) True,, as size of linker DNA varies from species to species chromatin remodeling and modifying mechanisms target these regions of the nucleosome to reposition nucleosomes, disassemble nucleosomes and exchange variant histones.
Answer 3)False, because different type of mutation can alter the function of lac operon.
Answer 4) false. expression of prokaryotic operons leads to the generation of polycistronic mRNAs, while eukaryotic operons lead to monocistronic mRNAs.
Answer 5) true, open reading frame is a region between start and stop codon.
Answer 6) true, satellites provide stability to DNA.
Answer 7)false
Answer 8) false, lac operon transcribed lactose, when glucose is not present.
Answer 9) true.
Answer 10) false, adnine percentage is different in all species.