Blue white selection is a widely used method in screening recombinants in cloning. This is based on the gene product of lac z gene. The plasmid vectors contain this gene which produces β galactosidase enzyme. When a gene is inserted close to lac z gene‚ the reading frame will be distorted and the gene is inactivated. So the transformed cells will not produce this enzyme and are called competent cells. After the recombination‚ the bacterial cells are grown in a medium containing X gal (5-bromo-4-chloro-indolyl-β-D-galactopyranoside)
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CHAPTER 7‚ SECTION 7.2 PAGES 305 – 310 Natural selection: A process in which results in the characteristics of a population of organisms change over many generations. It occurs because individuals with certain inherited traits survive specific local environmental conditions and through reproduction‚ pass on their alleles to their offspring. Selective Pressure: environmental conditions that select for certain characteristics of an individual and select against other characteristics It may
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Explain how psychological perspectives have been used to criminal behavior Biological approaches: (P1)The biological approach means that our behavior is the cause of biological factors. This approach looks at our genetics to construct a reason why we act the way we do and why we develop abnormal behaviors. The brain and nervous system are the biological approach and so are chemical changes in the body .This can mean chemical reactions in the brain. For instance‚ in eating disorders - twin studies
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Employee Selection Tools When selecting a new employee for a supermarket the three possible tools to use would be references‚ aptitude tests and a criminal background check. From the three tools mentioned the best choice would be a combination of all the tools‚ references‚ aptitude tests and criminal back ground check (including drug testing). The reason I have made this choice is because through references you can determine reliability and some insight on personal ethics. The aptitude tests will
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Abstract This experiment was conducted to study gender differences in mate selection preference. 82 participants‚ aged 17-23 years and have never been married were randomly selected for the experiment in a convenience sample. Participants were given a survey- listing considerations important to people in choosing a life partner- to complete. Participants had to rate how willing they are to marry a person with a certain characteristic; each characteristic is rated individually on a 7-point scale
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Challenges in recruitment and selection practices Recruiting‚ selection and hiring of employees is the most important job of a Human Resource person. Cooper‚ et al‚ (2003) it cannot be blunder that the success of any firm depends on the quality of human resources and talents in the firm. The quality of the organization’s products and services will suffer if unsuitable people are employed. In the CIPD view point it believes that effective recruitment is central and crucial to the success of day
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researcher can increase sample size with this technique Disadvantages ü Selection may be biased since the sampling is not random ü Technique is the least representative of the population ü This is also probability sampling with a possibility of high sampling error Quota Sampling In quota sampling‚ the population is first segmented into mutually exclusive sub-groups‚ just as in stratified sampling. Then judgment is used to select the subjects or units from each segment based on a specified proportion
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Recruitment & Selection Chapter 1: Introduction In this modern day‚ working is one of the certain needs for living. Imagine if someone is not working‚ they cannot eat‚ pay the bills‚ pay their child school tuition‚ etc. For working‚ there are some steps that have to pass before working in some place. The steps is called RECRUITMENT and SELECTION. Recruitment and selection are the important things to build a good workforce in the working environment of the company. According to the answers.com
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Three of the earliest teaching methods were the Grammar-Translation Method‚ the Direct Method‚ and the Audio-lingual Method. Discuss these three methods. Also‚ explain their shortcomings which led to more current approaches in the teaching of grammar to L2 speakers. 1. i) Grammar Translation Method (GTM): Grammar-translation method is the extension of the Classical method which began in Germany (Prussia) in the late 18th century. It was then become popular in the early 19th century. It is one
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Heritage Assessment Kyler G. Merrill Grand Canyon University: NRS-429V 01/18/2015 Heritage Assessment Tool Today in society there are many diverse culture and ethnic backgrounds‚ each with their own habits‚ traditions‚ preferences‚ and of these includes health. Different needs of the whole person should be evaluated in detail. This paper will discuss results from three different cultures through the interviewing of them using the Heritage Assessment Tool. It will also review‚ compare
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