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Unformatted text preview: rium. Conversely, estuarine mussels having the same enzyme seem to be disfavored and have a much higher death rate than mussels without the allele. Adult estuarine populations do have lower frequencies of this allele. Each spring, large numbers of larvae from the salty habitats pour into the estuaries. 199. The invasion of the seawater larvae would be expected to facilitate change in the genetic structure of the estuarine population by a process called (A) (B) (C) (D) (E) directional selection genetic drift gene flow disruptive selection nonrandom mating 200. THIS ITEM WAS NOT SCORED. If you finish before time is called, you may check your work on this test. Unauthorized copying or reuse of any part of this page is illegal. 62 NO TEST MATERIAL ON THIS PAGE 63 I NOTE: To ensure prompt processing of test results, it is important that you ﬁll in the blanks exactly as directed. SUBJECT TEST
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B. The Subject Tests are intended to measure your achievement in a specialized ﬁeld of study. Most of the questions are concerned with subject matter that is probably familiar to you, but some of the questions may refer to areas that you have not studied. Your score will be determined by subtracting one-fourth the number of incorrect answers from the number of correct answers. Questions for which you mark no answer or more than one answer are not counted in scoring. If you have some knowledge of a question and are able to rule out one or more of the answer choices as incorrect, your chances of selecting the correct answer are improved, and answering such questions will likely improve your score. It is unlikely that pure guessing will raise your score; it may lower your score. You are advised to use your time effectively and to work as rapidly as you can without losing accuracy. Do not spend too much time on questions that are too difﬁcult for you. Go on to the other questions and come back to the difﬁcult ones later if you can. YOU MUST INDICATE ALL YOUR ANSWERS ON THE SEPARATE ANSWER SHEET. No credit will be given for anything written in this examination book, but you may write in the book as much as you wish to work out your answers. After you have decided on your response to a question, ﬁll in the corresponding oval on the answer sheet. BE SURE THAT EACH MARK IS DARK AND COMPLETELY FILLS THE OVAL. Mark only one answer to each question. No credit will be given for multiple answers. Erase...
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This document was uploaded on 03/16/2014 for the course BIO 1434 at UT Arlington.
- Spring '14