Answer Sheet

Answer Sheet Photo Credit: Clipart.com


Here are the answers to the questions students are asked on their student sheets.

What Is Behavior? Quiz

Students were instructed to mark behaviors with a “B” or to record the equivalent numbers on a sheet of paper. 

1. _____ rust building on the metal of a car
“things that are not alive do not behave”

2. __B__ a smoker craving a cigarette
“behaviors are holistic responses to stimuli from inside the body”

3. __B__ lichen growing on rock
“all living organisms, not just humans, behave”

4. __B__ a flower closing its petals as darkness falls
“even plants behave”

5. __B__ a man hiccoughing
“behavior also can be unconscious, automatic, or instinctual”

6. _____ boulders tumbling down a cliff
“rocks and oceans and planets do not behave”

7. __B__ a new mother falling into post-partum depression
“mood disorders fall into the category of behavior”

8. __B__ a schizophrenic patient experiencing hallucinations
“mental illness falls into the category of behavior…”

9. __B__ a girl and boy flirting on the bus
“mostly we think of behavior as something conscious…”

10. _____ a computer winning a game of chess
Although the computer is reacting to moves by the other player, it is doing so strictly
according to its software. To the extent that software is like a genetic code, the computer is
simulating behavior. But most scientists would not define this as real behavior.

11. __B__ birds migrating south in the fall
“…behavior also can be … instinctual”

12. __B__ an old man with Alzheimer’s forgetting the name of his son
“physical manifestations of most diseases are behaviors, too”

13. __B__ a bacteria darting across a liquid
“animals behave, insects behave, and single-celled amoebas behave”

14. ______ adult teeth replacing baby teeth
The development of adult teeth is a biological process that is highly regulated by genes. It’s
affected by environment but in such a minimal way that most scientists would not
characterize it as behavior.

15. __B__ a mathematician calculating a formula
“the type of thinking that involves knowing and perceiving is called intelligence or cognition”

16. _____ a middle-aged man experiencing male-pattern baldness
Male-pattern baldness is an inherited trait that is predominantly influenced by genetic
inheritance. Environmental influences on this form of baldness are so minimal that most
scientists would not characterize it as behavior. Most scientists also would not characterize
as behavior the baldness that results from radiation therapy, because it is entirely or almost
entirely caused by environmental effects.

17. _____ snow falling
“things that are not alive do not behave”

18. __B__ a teacher who cheerfully greets her students each morning
“personality is behavior”

19. __B__ a student daydreaming during class
“thinking itself is behavior”

20. __B__ a soccer player making a goal
“behavior are the actions a creature makes, as a whole, in response to the world around it”

Chapter 2: How Do Genes Work within Their Environments?

  1. chromosomes G, IV
  2. genome D, III
  3. genotype A, II
  4. natural selection E, V
  5. phenotype B, VII
  6. protein C, VI
  7. quantitative genetic trait F, I

Chapter 3: How Do Environments Impinge Upon Genes?

  1. developmental noise F, VII
  2. environmentability E, VI
  3. gene/environment interaction A, II
  4. heritability D, IV
  5. negative gene/environment correlation H, VIII
  6. positive gene/environment correlation G, I
  7. shared environment C, III
  8. unshared environment B, V


This teacher sheet is a part of the Genes, Environments, and Behavior 1 lesson.

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