Which statement best describes the results of dna replication a) two identical dna molecules b) one dna molecule c) messenger rna d) two genetically different dna molecules .

A) two identical DNA molecules

Explanation:

DNA replication is an important process that all living cells must undergo prior to any division. It is a process whereby the cell doubles its genetic material (DNA) in order for each daughter cell to have a correct amount of DNA after the division process.

DNA replication occurs in the Synthesis phase (S-phase) of Interphase. It involves the synthesis of a new DNA strand using an old DNA template. Before DNA is replicated, the double-stranded DNA of a cell is unwinded by an enzyme called DNA HELICASE to form two single DNA strands. Each DNA strand is then used as a template by DNA polymerase enzyme to synthesize another DNA strand using complementary base pairing rule i.e. A-T, G-C

Hence, at the end of of the replication process, two identical strands emerge to form a double-stranded DNA molecule (one old strand and one new strand). Note that, the newly synthesized straight is very much similar to the complementary strand because the information (nucleotide sequence) in it was used to synthesize a new strand.

americans began to notice growing differences between the northern and southern sections of the country. there were more people living in cities in the north, which made it more urban. more people lived on farms in the south, which made it more rural. while many people were farmers in the northern states, there were now other ways to make a living, such as working in mechanical cotton gins factories manufacturing cloth, tools and other goods. people in the north supported high tariffs on goods imported from europe because the extra cost encouraged people to “buy american” instead. in the southern states, planters did not like tariffs because they sold most of their production to europe and bought their tools from there as well. southerners believed the protective tariff was something that only northern factory owners keep their profits high. so the southern politicians came up with an idea. they would opt out. they would simply ignore the protective tariff. it was ‘null and void’ in south carolina. the state would not collect the taxes on goods imported into south carolina, no matter what the president said they had to do. this decision led to the nullification crisis.

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