Answer: C. The new DNA molecule consists of one new strand and one old strand of DNA.
DNA replication is a biological process that makes two identical DNA molecules which are the replicas of the original DNA molecule. The double stranded DNA gets separated into two template strands. Each template strand act as a guiding strand for producing a counterpart called as complementary strand. Template and complementary strands combine to form a new double stranded DNA. Therefore, the new DNA molecule consists of one new strand (complementary strand) and one old strand (template strand) of DNA.
The outcome of DNA replication is formation of a new DNA molecule consists of one new strand and one old strand of DNA.
Further Explanation:
The genetic information is known to be packaged in 23 sets of chromosomes. In these, histones are the proteins that aid the molecule of DNA to be very tightly packed in added and also aids in maintaining the double-helical structure of the DNA.
Two identical DNA molecules are formed as a result of DNA replication. The DNA helicase breaks the bond between the base pairs to separate the two strands of DNA. The template strand is required for the initiation of polymerization by a DNA polymerase enzyme. Primers are formed and the complementary strands are produced. Thus, the resultant DNA formed by the process of replication has one strand from the parent and another one is newly synthesized.
It consists of mainly three stages:
DNA undergoes a replication process wherein duplication of the double-helical structure takes place. It then moves further and forms an RNA molecule through a process called transcription. RNA undergoes RNA processing followed by post-transcriptional modifications which further release out mRNA, rRNA, and tRNA molecules. All the 3 kinds of RNA enter into the last stage of central dogma called translation. During this, proteins are formed.
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Answer Details:
Grade: High School
Subject: Molecular Biology
Chapter: Gene expression
Keywords:
DNA, replication, elongation, initiation, termination, double-helical structure, protein, transcription, translation, genetic information.
