How is DNA packaging and X chromosome inactivation linked? How is DNA structure similar to a protein? How is ribosomal DNA arranged on chromosomes? What is the difference between chromatin and a nucleosome? How is DNA stored in eukaryotic cells?
What are the structures of RNA and DNA and how might one be used to create the other? What DNA virus replicates in cytoplasm? What binds to the prokaryotic chromosome to start DNA replication? How is ribosomal DNA arranged on chromosomes?
DNA is an extremely long molecule, so long that if all the DNA in a human was uncoiled and placed end to end, it would stretch 10 billion miles. That would be the same as a round trip to Pluto! However, it is also thousands of timesthinnerthan a strand of hair. Locationally speakin...
Proteins that work closely with one another in the cell often have their genes located on different chromosomes, and adjacent genes typically encode proteins that have little to do with each other in the cell. Decoding genomes is therefore no simple matter. Even with the aid of powerful ...
All genes are made up of stretches of these four bases (arranged in different ways and in different lengths). You can view a 3-D rotatable image of DNAhere... Photo: National Institute of Health A critical feature of DNA is the ability of the nucleotides to make specific pairs: . Adeni...
Because the DNA of a fruit fly is understood very well, let's use the fruit fly as an example, specifically that of Drosophilia melanogaster. Here are some facts about fruit fly DNA: The DNA of a fruit fly is arranged on five chromosomes. There are about 250 million base pairs in this...
Molecular methods of species delineation are rapidly developing and widely considered as fast and efficient means to discover species and face the 'taxonomic impediment’ in times of biodiversity crisis. So far, however, this form of DNA taxonomy frequen
-movement of chromosomes/chromatids compare and contrast prokaryotic and eukaryotic cells (7) SNOWDRF -Prokaryotes are extremely small (less than 2 micrometers in diameter) while eukaryotes are larger (10-100 micrometers) -Prokaryotes DNA is circular while Eukaryotas DNA is li...
genes containing a homeobox are classed as Hox genes. These are genes involved in homeotic mutations, showing that this special subset of the homeobox genes is responsible for establishing major body patterning events in animals. These are now known as Hox genes arranged in the aforementioned ...
In general, why is it important for a cell to regulate protein production? And what are the steps in gene expression that ultimately affect protein levels in a eukaryotic cell? Why do RNA viruses replicate in cytoplasm? How is ribosomal DNA arranged on chromosomes?