Answer:
An example of circular double-stranded DNA molecules is the mitochondrial genomes that are 16,569 bp long and are present as one or more copies within all mitochondria of a cell. Thus mitochondrial DNA (mtDNA) is present in hundreds to thousands of copies per cell.
mtDNA is maternally inherited, so siblings will share the same DNA as their mother but not that of the father.
mtDNA is present in cells at a high copy number.
mtDNA is typically sequenced in the two hypervariable regions.
Explanation:
mtDNA is useful primarily for identity testing. mtDNA analysis may become essential when only a distant relative is available for a reference specimen.
In database searches of autosomal STR data from unidentified human remains or missing person relatives, the algorithms for the search often produce several potential matches, and mitochondrial DNA analysis is needed to identify the true match.
Deficiency wise, pathological alterations of mtDNA may occure and, it fall into three major classes: point mutations, deletion-duplications and disordered mtDNA content, that is, copy number.
On how to overcome these deficiency, the maintenance and integrity of the mitochondrial genome depend on several poorly understood factors.
Theoretically, defects in any of the proteins involved in mtDNA replication might affect mtDNA copy number. MtDNA replication is also highly dependent on mitochondrial dNTPs supply, and mutations in several genes involved in mitochondrial dNTP synthesis may therefore cause MDS (Mitochondrial DNA depletion syndrome).
Answer:
No
Explanation: Apples and Oranges are different species, therefore they are unable to interbreed. This would only be possible by gene splicing (Gene splicing is a form of genetic engineering where specific genes or gene sequences are inserted into the genome of a different organism) which is incredibly difficult.
The correct answer is option B (Microevolution)
Microevolution is defined as a change is allele frequencies observed within a population. In contrast to macroevolution it can be observed within a short period of time even within a same generation.
Microevolution can occur due to following reasons:
- Gene flow or Gene migration
- Genetic drift
- Mutation
Carbon dioxide
carbon monoxide
sulfer dioxide
Answer:
<em> </em><em>Pseudomonas aeruginosa, Serratia marsescens, Klebsiella pneumoniae or Escherichia coli </em>
Explanation:
Meningitis is the inflamation of the meninges (membranes that cover the brain and spinal cord) due to the infection of the fluid around it. Some of the symptoms are fever, sleepiness, nausea and vomiting, stiff nech and seizures.
Meningitis can be caused by Gram negative bacterie such as<em> H. influenzae., Escherichia coli, Klebsiella pneumoniae, Pseudomonas aeruginosa or Serratia marsescens</em>. <em>From these options only </em><u><em>Pseudomonas aeruginosa, Serratia marsescens, Klebsiella pneumoniae </em></u><em>and </em><u><em>Escherichia coli </em></u><em>are rod-shaped gram negatives.</em>
I hope you find this information useful and interesting! Good luck!
