How many base pairs are in 18S ribosomal RNA? How many different kinds of proteins does one cell contain? After three rounds of DNA replication, how many all-white DNA (both strands are white) will there be? Explain your reasoning.
How many strands does DNA have? How many nucleotides are there in human DNA? How many copies of genomes are there per cell? How many types of RNA are involved in protein synthesis? Which enzyme is used in DNA sequencing? What is the role of DNA helicase during DNA replication?
The process whereby viral RNA is specifically selected for packaging within viral particles has been extensively studied over many years. As a result, two broad hypotheses have emerged to explain this specificity, though these are not mutually exclusive. The first proposes that the viral RNA contains...
With the intensification of the greenhouse effect, a series of natural phenomena, such as global warming, are gradually recognized; when the ambient temperature increases to the extent that it causes heat stress in plants, agricultural production will in
DNA-manipulation enzymes- There are specialized enzymes that move along DNA strands and repair them. There are other enzymes that can untwist DNA strands to reproduce them (DNA polymerase). Still others can find small patterns on DNA and attach to them, blocking access to that section of DNA ...
the same nuclease site. Since it has beenshown that the two strands follow different pathways to reach the catalyticsite, explaining the staggered DSB produced by Cas12a . Cleavage fidelity is an important issue formany of the nucleases used in genome editing applications . An optimal toolmust ...
34, 53 Atomic structure determination techniques have also been applied to study transient structures and structural transitions.5, 54 For example, the coupling of NMR with photo-cage labeling of RNA strands has allowed researchers to trigger the conformational switching of an adenine riboswitch by ...
Viral core:Inside the envelope is the core, which contains 2,000 copies of the viral protein p24. These proteins surround two single strands of HIV RNA, each containing a copy of the virus's nine genes. Three of these genes — gag, pol and env — contain information needed to make stru...
Several PcG and TrxG proteins remain bound to replicating chromatin and may transmit memory to daughter strands. During mitosis, many proteins dissociate from chromatin and transcription shuts down. This may favour a silent PRE but challenge an active one. Several PcG and TrxG proteins remain ...
The guide RNA is paired with a Cas9 enzyme to make edits in the genome. Once the RNA binds to the desired sequence, the enzyme swoops in and cuts both strands of DNA. In response, the cell attempts to glue the strands back together, but it uses afault-ridden processthat often introduce...