Research has shown that positive thinking can have a benefic…

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 exam 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.

Two closely related species of birds (Purple and Green) live…

Two closely related species of birds (Purple and Green) live in the same region and mate between June and July. Purple males have an elaborate mating dance that involves keeping their wings out and pointing upwards for the duration. Green males’ mating dance involves rapid flapping motions with their wings that creates a humming sound.  When a Green female sees a Purple male’s dance, she never shows interest. When a Purple female sees a Green male’s dance, she will often mate with the male, however, the offspring often die within two weeks of hatching.  Which of the following pre-zygotic and post-zygotic barriers are demonstrated in this scenario? (select all that apply)