Telomerase adds complementary RNA bases to the 3′ end of the DNA strand. Once the 3′ end of the lagging strand template is sufficiently elongated, DNA polymerase adds the complementary nucleotides to the ends of the chromosomes; thus, the ends of the chromosomes are replicated. What sequence does telomerase add?Read More →
Why are single-stranded binding proteins necessary for DNA replication? They provide the energy necessary to separate the two strands of DNA. They prevent the two parental strands from coming together again. … In circular DNA, the DNA molecule is not shortened during replication. Why do we need single-stranded DNA? SynthesizingRead More →
Single strand knots. If you have naturally textured hair, they’re inevitable and, unfortunately, not completely preventable. … A single strand knot forms when a strand of hair curls up on itself, creating a knot. They usually turn up the longer the hair is and the tighter the coil. Do IRead More →
Transcription takes place in the nucleus. It uses DNA as a template to make an RNA (mRNA) molecule. During transcription, a strand of mRNA is made that is complementary to a strand of DNA. Do both strands of DNA get transcribed? Unlike DNA replication, in which both strands are copied,Read More →
Antisense. Antisense is the non-coding DNA strand of a gene. A cell uses antisense DNA strand as a template for producing messenger RNA (mRNA) that directs the synthesis of a protein. How is mRNA produced? mRNA is created during the process of transcription, where an enzyme (RNA polymerase) converts theRead More →