The ability to reproduce is one of the unifying characteristics of all living things. Sexual reproduction produces offspring that are genetically different from their parents. Asexual reproduction produces offspring genetically identical to their parent.
Asexual Reproduction
Fission, budding, fragmentation, and the formation of rhizomes and stolons are some of the mechanisms that allow organisms to reproduce asexually. The hydra produces buds; starfish can regenerate an entire body from a fragment of the original body. Asexual reproduction allows an organism to rapidly produce many offspring without the time and resources committed to courtship, finding a mate, and mating. The lack of genetic variability in asexually reproducing populations can be detrimental when environmental conditions (for which all the clones are so well adapted) change quickly.
Sexual Reproduction
In sexual reproduction new individuals are produced by the fusion of haploid gametes to form a diploid zygote. Sperm are male gametes, ova (ovum singular) are female gametes. Meiosis produces cells that are genetically distinct from each other; fertilization is the fusion of two such distinctive cells that produces a unique new combination of alleles, thus increasing variation on which natural selection can operate.
Rotifers will reproduce asexually when conditions are favorable by having females produce eggs by mitosis. When conditions deteriorate, rotifers will reproduce sexually and encase their zygotes inside a resistant shell. Once conditions improve, these eggs hatch into diploid individuals. Rotifers thus use sexual reproduction as way to survive a deteriorating environment.
Sexual reproduction offers the benefit of generating genetic variation among offspring, which enhances the chances of the population's survival. Costs of this process include the need for two individuals to mate, courtship rituals, as well as a number of basic mechanisms described later.
Oct 17, 2009
Oct 3, 2009
Laissez-faire
Laissez-faire
The coach who practices this style of training possesses unconcerned and indifferent
characters. The coach also lacks the self-esteem in leading a team. The characters also reveal that he is lacking the knowledge, and by acting indifference is the best and fair way to lead a team. He is seen to use too little of his authority. The ways of training would result in the athletes to enjoy the time and to take the training less seriously; thus it would be detrimental to the success of the team. The practice sessions do not focus on the success, but rather on the satisfaction of the athletes. Some expert thought that this style of training is effective for athletes who have vast experiences, highly motivated, and knowledgeable in the field that is being carried out. These athletes do not need the constant guidance and are more comfortable to do their training on their own. They also believe that too much of control will make them to feel confined.
The coach who practices this style of training possesses unconcerned and indifferent
characters. The coach also lacks the self-esteem in leading a team. The characters also reveal that he is lacking the knowledge, and by acting indifference is the best and fair way to lead a team. He is seen to use too little of his authority. The ways of training would result in the athletes to enjoy the time and to take the training less seriously; thus it would be detrimental to the success of the team. The practice sessions do not focus on the success, but rather on the satisfaction of the athletes. Some expert thought that this style of training is effective for athletes who have vast experiences, highly motivated, and knowledgeable in the field that is being carried out. These athletes do not need the constant guidance and are more comfortable to do their training on their own. They also believe that too much of control will make them to feel confined.
Coaching
Coaching is defined as an activity that provides comprehensive sports training and
prepares a sportsperson (sports man or sports woman) on a multi-level basis for
participation in competition.
Coaches are role models and teachers to their athletes. Good coaching is not about
producing winning team; it is about asking before a practice session or a game, “Does
what we’re planning to do today is in the best interest of the athletes?”
To be a successful coach, you need to possess a number of characteristics:
(a) continuous drive and steadfastness;
(b) self-discipline and leadership by example;
(c) flexible coaching and training strategies and techniques;
(d) commitment to your athletes and your sport; and
(e) adherence to the code of ethics.
Success requires your continuous drive and steadfastness. The success of your team is
determined by the team that has members who are active and energetic physically,
mentally, emotionally and socially. Your athletes should understand that even the best player still needs to continue his or her struggle to enjoy continuous success. They have to continue receiving instruction and direction from you as the coach, especially in terms of enhancing their discipline and developing team-work and cooperation within the team.They have to accept the fact that a winning team is usually the team that possesses solid team-work as opposed to the team that values individuality. As the coach, you can change strategies and techniques of training, which will be able to soothe the athletes and at the same time will further instruct the athletes to work harder without making them feel stressed. The team that does not bow to defeat will be more successful in the long run.
prepares a sportsperson (sports man or sports woman) on a multi-level basis for
participation in competition.
Coaches are role models and teachers to their athletes. Good coaching is not about
producing winning team; it is about asking before a practice session or a game, “Does
what we’re planning to do today is in the best interest of the athletes?”
To be a successful coach, you need to possess a number of characteristics:
(a) continuous drive and steadfastness;
(b) self-discipline and leadership by example;
(c) flexible coaching and training strategies and techniques;
(d) commitment to your athletes and your sport; and
(e) adherence to the code of ethics.
Success requires your continuous drive and steadfastness. The success of your team is
determined by the team that has members who are active and energetic physically,
mentally, emotionally and socially. Your athletes should understand that even the best player still needs to continue his or her struggle to enjoy continuous success. They have to continue receiving instruction and direction from you as the coach, especially in terms of enhancing their discipline and developing team-work and cooperation within the team.They have to accept the fact that a winning team is usually the team that possesses solid team-work as opposed to the team that values individuality. As the coach, you can change strategies and techniques of training, which will be able to soothe the athletes and at the same time will further instruct the athletes to work harder without making them feel stressed. The team that does not bow to defeat will be more successful in the long run.
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