1 D. a hereditary unit consisting of a sequence of DNA Home Which
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1
Which of these is the correct definition for a gene?
A. a single cell organism
B. a string of Mitochondrial DNA
C. non-hereditary traits such as learned behaviors
D. a hereditary unit consisting of a sequence of DNA
1
Which of these is the correct definition for a gene?
D. a hereditary unit consisting of a sequence of
DNA
2
Some birds fly south for the winter.
Birds know when and where to fly because of —
A. camouflage
B. mimicry
C. instinct
D. hibernation
2
Some birds fly south for the winter. Birds know when and where to fly because of —
C. instinct
3
Which of these is not an instinctive behavior?
A. a bird building a nest
B. a turtle burying its eggs
C. a bear hibernating in winter
D. a horse pulling a plow
3
Which of these is not an instinctive behavior?
D. a horse pulling a plow
4
Karen has two sisters and one younger brother. Her parents and grandmother also live with her. She is the only blonde in her family. However, everyone in her family has brown eyes.
Which of these is being described in the passage?
A. gene display
B. inherited traits
C. learned behaviors
D. nature versus nurture
4
Karen has two sisters and one younger brother. Her parents and grandmother also live with her. She is the only blonde in her family. However, everyone in her family has brown eyes.
Which of these is being described in the passage?
B. inherited traits
5
Which of these are characteristics of inherited traits?
A. the ability to speak in front of a crowd
B. having green eyes and brown hair
C. mastering multiplication tables
D. becoming an extrovert
5
Which of these are characteristics of inherited traits?
B. having green eyes and brown hair
Smelts are fish that lay their eggs in the sand on beaches. When the eggs hatch, the babies know to go to the water. This is an example of —
A. instinct
B. hibernation
C. camouflage
D. learned behavior
6
Smelts are fish that lay their eggs in the sand on beaches. When the eggs hatch, the babies know to go to the water. This is an example of —
A. instinct
6
7
Which BEST explains why some dogs have longer ears than others?
A. They do different activities.
B. They eat different types of food.
C. They inherit their ear length from their parents.
D. They inherit their ear length from their children
7
Which BEST explains why some dogs have longer ears than others?
C. They inherit their ear length from their parents.
8
Which is a learned behavior?
A. A cow flicking away a fly with its tail.
B. A baby whale drinking milk from its mother.
C. A cat closing its eyes when it sleeps
D. A dog scratching the door to be let outside
8
Which is a learned behavior?
D. A dog scratching the door to be let outside
9
Which of the following are traits that you probably inherited?
A. your taste in clothing
B. your favorite music
C. your eye color
D. All of the above
9
Which of the following are traits that you probably inherited?
C. your eye color
