The correct answer for this question would be the fourth option. Deletion of genes around the centromere is considered a pericentric inversion. The Pericentric inversions include the centromere and there is a break point in each arm. <span>Deletions and duplications occur during crossing over during the inversion which results in recombination in two loops. </span>
Yes accumulation of mutation can drive aging process.
Explanation:
The molecular damage that occurs in cells and tissues for a long time due to DNA damage and epigenetic changes gets accumulated in the cell.
This leads to lowering of the homeostasis in the cell during stress conditions and eventually risks of life-threatening diseases as cancers or neurodegenerative disorders develop.
Due to mutation in the gene DNA repair mechanism also gets affected this also contributes to the ageing of cells.
The telomere of the chromosome is shortened after every mitotic division but telomerase enzyme keeps adding the DNA sequence preventing shortening aging and death of the cell. If the mutation occurs in this enzyme it will increase the ageing of cells at high rate.
I think that it will prevent infection by this pathogen. In a gram-positive bacteria a polysaccharide serves as specific adhesin To effectively achieve adherence to host surfaces, many bacteria produce multiple adherence factors called adhesisns. Which are expressed by both pathogenic bacteria and saprophytic bacteria. Therefore a drug that blocks adhesins on the surface of a bacteria or any other pathogen, makes it impossible for a bacteria to survive in the host.
Answer:
I'm pretty sure the answer is C but not positive
