Sickle-cell anemia and malaria Essay Example | Topics and Well Written Essays - 750 words

Sickle-cell anemia and malaria - Essay Example In other words, there are some natural selection traits that favor sickle cell-anemia allele in some individuals. Malaria occurs in the tropical zones and is caused by a protozoa transmitted by the anopheles female mosquito. As such, people from an African descent have the sickle cell anemia allele considering that heterozygotes for the allele are protected from malaria while not showing any significant characteristics of sickle-cell anemia. These people can then live to adult age and transfer these alleles to their offspring, which guarantees the transfer of the allele along the genetic line of individuals, leading to a new gene pool. Therefore, for some recessive alleles that are destructive to the recessive homozygotes, natural selection is an important process through which the heterozygotes of the recessive alleles have to survive (Sabeti, 2008). For instance, when an individual carrying the sickle cell allele is in an area where malaria is not prevalent, having the sickle cell anemia allele does not guarantee any survival advantage. As such, in countries such as United States, there are much fewer cases of sickle cell alleles compared to tropical regions such as in Africa. However, the disease is still reported among people of the African descent, though on low frequencies. This is because, the time required for the allele frequency to reduce significantly to negligible amounts has not passed. With the passage of time, the sickle cell anemia may become extinct in these areas. Application of advanced technologies would ensure individuals are in a position to make better and informed decisions on reproduction, which may help in ensuring extinction of a number of genetic diseases from passing through

United States Probation Officer Essay Example | Topics and Well Written Essays - 500 words

United States Probation Officer - Essay Example Further, serving as a witness in criminal court proceedings shows my commitment to justice and offenders’ behaviour modulation. I have also been able to engage in security circulation activities amongst clients and colleagues, acquiring vital verbal and written communication skills in the process. These skills will be paramount in successful execution of my duties as a probation officer. I will be highly honored to use learnt skills, to serve the community, as a probation officer with the United States Probation Department in New York. I am up to the challenge of serving as a proficient social worker capable of handling the wide array of offenders, together with their families whether in court, prisons or even in mainstream community. I will fulfil my duties with diligence, to foster the department’s success in rehabilitating offenders and preventing them from reengaging in criminal activity. I intend to achieve this by challenging offenders’ behavior, and helping them reform their attitude and demeanor, thus protecting the general public from possibly of multiple offenses. I have also committed myself to learning people and their behaviour, as part of my passion for law enforcement and due to recognizing the fact that a probation officer deals with diverse personalities and duties. Even though a career in law enforcement is bound to be challenging, I am confident that being a federal probation officer will give me a unique opportunity to optimally utilize my analytical, academic and immense work experience. I recognize that a principal part of my job will entail extensive interaction with law enforcement agencies and justice establishments like courts of law. For instance, in order to ensure that offenders abide by the law I will need court orders and decrees to set offenders in the right path toward correction. Further, in the course of administering my duties to the community, I will need to advise individuals to seek justice from the courts