Color Blindness - Tritanopia essays

Color Blindness - Tritanopia essays Colour Blindness, defect of vision affecting the ability to distinguish colours, occurring mostly in males. Colour blindness is caused by a defect in the retina or in other nerve portions of the eye. Partial colour blindness, called dichromatism, consists generally of the inability to differentiate between the reds and the greens or to perceive either reds or greens; infrequently, the confusion may involve the blues or the yellows. Dichromatism is the most common form of colour blindness, affecting about 7 percent of men and less than 1 percent of women. Dichromatism is identified as a sex-linked hereditary characteristic (Figure 1). A colour blind person has difficulty in distinguishing colours that are on "confusion lines". For example, protanopes confuse blue-greens (and greys) with red (and browns). The deutranopes make mistakes with blue-greens and purple. While tritanopes confuse yellow with blue. The last dichromat group; tetartanopes, confuse yellow with blue. The anomalous types have difficulty with light tints and dark shades. Tritanopia is rare, affecting one in fifty thousand males and one in one hundred thousand females. There are three different types of wave sensitivity cones: long (red), medium (green), and short (blue). Short wave sensitivity (SWS) cones are most sensitive to a wavelength of approximately 419nm. When examining the absorbance curve, long and medium wave sensitivities are close together (30 nm shift), whereas the SWS cone curve is shifted more than 100 nm away S cones are much rarer than long and medium cones, accounting for approximately 5% of the total. When our vision depends on SWS cones alone, our spatial resolution is very poor. Tritanopes have malfunctioning SWS cones. The problem occurs when there is a dominant inheritance of the G79R and S214P mutations this suggests that the abnormal gene products actively interfere with the viability or accuracy of blue ...

Why Grad Schools Require Your Undergraduate Transcript

Why Grad Schools Require Your Undergraduate Transcript Its easy to get caught up in the graduate admissions process. Applicants to graduate school are often (and rightly) overwhelmed by the most challenging parts of the process, like approaching faculty for recommendation letters and composing admissions essays. However, the little things like college transcripts also matter in your graduate school application. No admissions committee will accept an incomplete graduate application. A late or missing transcript may seem like a dumb reason to receive a rejection letter, but it happens. Unfortunately, students with stellar credentials arent even considered by admission committees at their dream graduate programs because of a  forgotten transcript or one that is lost in snail mail. Request All Transcripts Your application is not complete until the institution receives your official transcript from all of your undergraduate institutions. That means that you must send a transcript from every institution that you have attended, even if you did not earn a degree.   Official Transcripts Are Sent by Colleges Dont even think about sending an unofficial transcript or a print out of your school record in place of a transcript.  An official transcript is sent directly from your undergraduate college or university to the school(s) to which you’re applying and bears the college seal. If you attended more than one institution, you will need to request an official transcript from each institution you attended. Yes, this can get pricey. What Do Admissions Committees Look for in Transcripts? In examining your transcript, admissions committees will consider the following: Your overall GPA and verification of your actual GPA compared to what you reported on your admissions documentsQuality of the undergraduate institutionBreadth of courseworkCoursework in your major: Your grades in your major subject area and especially in the upper division courses and within the past two yearsPatterns of performance and improvement if you did not have a strong start Request Transcripts Early​Prevent mishaps by planning ahead.  Request your transcripts from the registrars office early because most offices take a few days, a week, and sometimes even more time to process your request. Also, understand that if you wait until the end of the Fall semester to request transcripts they may be delayed as most offices close for the holidays (sometimes taking an extended break). Save yourself grief and request transcripts early. Also,  include a copy of your unofficial transcript with your application and a note that the official transcript has been requested so that admissions committees have something to review until the official copy arrives. Only some admissions committees may review an unofficial transcript and wait for the official version (this is especially unlikely in competitive graduate programs), but its worth a shot.