Pretest

Question 1

Within a flock of birds, some birds have long narrow beaks, and other birds have short wide beaks. Environmental changes happen that make it harder for birds that have short wide beaks to find food. After several generations, most of the flock has long, narrow beaks. Which statement best describes the trait of the type of beak that a bird in this flock has?

Revolt · Accepted Answer

B: Having a long, narrow beak is an inherited trait that is genetically passed down.

Question 2

Which statement best describes how the environment influences the traits of an individual?

Revolt · Accepted Answer

C: The environment influences the gene expression which can change the phenotype.

Question 3

Which best describes an acquired trait?

Revolt · Accepted Answer

A: An acquired trait is developed during one’s lifetime.

Question 4

Tara has two dogs. They win many of the agility competitions they enter. These competitions test a dog's ability to run, jump, maneuver around and through obstacles, and follow complex instructions. These two dogs have a litter of puppies together. Which description most correctly describes these puppies?

Revolt · Accepted Answer

C: With training, the puppies are likely to excel at agility competitions.

Question 5

Which statement best describes heredity?

Revolt · Accepted Answer

D: Traits coded for in DNA are passed from parent to offspring.

Question 6

Which is an acquired trait?

Revolt · Accepted Answer

B: a scar

Question 7

Which trait is determined by genetics alone?

Revolt · Accepted Answer

C: blood type

Question 8

Jaden’s father is not sensitive to poison ivy. Jaden is also not sensitive to poison ivy. Jaden’s lack of sensitivity to poison ivy is which kind of trait?

Revolt · Accepted Answer

D: inherited

Question 9

Which describes the relationship between a genotype, a phenotype, and an organism’s experiences?

Revolt · Accepted Answer

C: A genotype is an organism's allele combination. A phenotype is the physical appearance of a trait in an organism, which may be influenced by the organism’s experiences.

Question 10

Which is an inherited trait?

Revolt · Accepted Answer

C: flavor of an apple from a particular tree

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