Two complementary strands of the DNA can accommodate only three nitrogen rings between them. More or fewer nitrogen rings will not fit because of space issues. Thus, purine-purine cannot pair with each other due to the unavailability of the required space to bond together in the DNA double helix. IsRead More →
These are cytosine, guanine, adenine (found in both DNA and RNA), thymine (found only in DNA), and uracil (found only in RNA). In DNA, adenine pairs with thymine, while cytosine pairs with guanine. Is adenine found in DNA or RNA? Three of the four nitrogenous bases that make up RNARead More →
The main enzyme involved in transcription is RNA polymerase, which uses a single-stranded DNA template to synthesize a complementary strand of RNA. … It synthesizes the RNA strand in the 5‘ to 3′ direction, while reading the template DNA strand in the 3′ to 5’ direction. Why does DNA replicationRead More →
The main difference between recombinant and nonrecombinant is that recombinant has undergone genetic recombination whereas nonrecombinant has not undergone genetic recombination. … Recombinant contains a new combination of genetic elements while nonrecombinant contains the parental sequences of genetic elements. What is non recombinant offspring? Biology Glossary search by EverythingBio.com. SYN:Read More →
DNA sequencing is a laboratory method used to determine the order of the bases within the DNA. … In general, sequencing allows healthcare practitioners to determine if a gene or the region that regulates a gene contains changes, called variants or mutations, that are linked to a disorder. How isRead More →
Phosphorylation is the process by which phosphate groups are added to a molecule by a kinase. The phosphorylation status of a fragment of DNA can influence its ability to proceed in reactions. How is DNA polymerase phosphorylated? DNA polymerase λ is phosphorylated by the Cdk2/cyclin E, Cdk2/cyclin A and Cdk1/cyclinRead More →
The two strands of DNA have to be temporarily separated from each other; this job is done by a special enzyme, helicase, that helps unwind and separate the DNA helices (Figure 4). What is the unwinding of the double helix? DNA helicase is the enzyme that unwinds the DNA doubleRead More →
DNA replication is said to be semiconservative because each newly made DNA molecule has one original and one new strand of DNA. How is DNA replication semiconservative? According to the semiconservative model, after one round of replication, every new DNA double helix would be a hybrid that consisted of oneRead More →
This study shows that patients might feel that transfusions could modify their behavior or values and that certain personality traits of the donor could be transmitted. … However, there is little scientific evaluation of possible changes in behavior after a transfusion. Does blood carry DNA? Blood is an excellent sourceRead More →
DNA replication in archaea requires a specific primase that shares similarities to the RNA recognition motif (RRM) and to viral RNA dependent RNA polymerases. The circular chromosomes of archaea contain multiple origins of replication for initiation of DNA synthesis. Do archaea have histones associated with DNA? Archaea contain histones thatRead More →