Which of the following is the best description of the law of independent assortment?

Which of the following is an objective finding?

How might an evolutionary biologist explain why a species of salamander becomes blind after colonizing a cave?

Which of the following is the dependent variable? Choose the best answer. 

How did the population of birds develop insulating feathers during an ice age rather than, say, becoming featherless and naked?

Cotton-topped tamarins are small primates with tufts of long white hair on their heads. While studying these creatures, you notice that males with longer hair get more opportunities to mate and father more offspring. To test the hypothesis that having longer hair is adaptive in these males, you should ________. (Choose the best answer)

Why is a scientific topic best discussed by people of varying points of view, from different subdisciplines, and representing diverse cultures? 

Research has shown that positive thinking can have a beneficial impact by reducing test anxiety and improving performance on exams. For your first question, select a positive affirmation from below to carry with you as you complete the quiz and write it as your answer for this first question. If you have your own positive affirmation, feel free to write it instead.   I’ve done my best to study for this test and am well prepared. I will use any nervous energy I have as a positive force. This is a good opportunity to show what I know. This is just one test, and it doesn’t define who I am as a person or what my future holds. I have the skills to succeed on this exam.

A 70-year-old male presents for evaluation of severe pain in his left eye, decreased vision, “seeing halos around lights,” nausea and vomiting. On examination, the patient’s left pupil is moderately dilated and nonreactive. The cornea is ‘steamy’ in appearance and the eye appears  generally red.  Based on this information, which of the following conditions is the most likely diagnosis for this patient?

An 8-year-old female presents to the Family Medicine clinic with her mother.  Her mother reports that the patient has had nasal congestion and nighttime cough for almost two weeks. The patient’s 3-year-old brother had similar symptoms that began around the same time and have since resolved. The patient initially seemed to be improving, but four days ago she began developing worsening nasal discharge and fever to 102.6°F at home. Her mother denies any change in appetite. The patient denies sore throat, ear pain, and headache. She is otherwise healthy. In the office, her temperature is 102.2°F, blood pressure is 96/71 mmHg, pulse is 128/min, and respirations are 18/min. On physical exam, the nasal turbinates are edematous and erythematous. She has a dry cough. Purulent mucoid drainage can be visualized dripping from the posterior nasopharynx. Her maxillary sinuses are tender to palpation. Which of the following organisms is most likely to be causing this patient’s current condition?