Part A:
1. a) H b) P c) P d) H e) P f) P g) H h) a and g are based on group selection
2. a) P ; P b) U ; EF c) P ; P d) U ; G e) P ; G
3. A) This is the best way to keep the species’ population from getting too large & C) This enables females to pick the best male, thereby improving the genetic quality of white-throated sparrows.
4. C) A comparison of identical and fraternal twins enables us to test the hypothesis that some differences among individuals are genetically determined.
5. D) It is contrary to the following prediction: persons experiencing different environments should exhibit different behaviours.
6. A) Tell us that animal behavior is dependent upon genetic information.
7. A) There must have been genetic variation relevant to the development of barking in the initial population in the experiment.
8. C) Not only had to have B>C but the difference between B and C had to be greater than any other alternative.
9. 1) Male wasps pounces on orchid flower petal – innate releasing mechanism
2) Odors coming from orchid flower petal – releaser
3) Hypothetical element of the wasps nervous system – innate releasing mechanism
10. i) B – Softest sound of a given sound frequency that a cricket can hear. ii) B – 5 kHz iii) D – The data were collected only from one cricket and so are inconclusive iv) C – crickets respond differently to sounds of different frequencies.
11. i) B – A hypothesis ii) Sexual selection theory iii) A – The time for a female to accept a nuptial gift should be less for prey covered in silk that has been experimentally coloured brown instead of white.
Part B:
1. Humans and birds follow a similar process when learning to vocalize. This is a basic process consisting of sound recognition, practice, and clarity. If this process is not followed properly the ability to speak or sing may not be fully acquired.
Human infants learn language by