AnswersBiologyAcquired and Inherited Traits

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1
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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?

A
Having a short, wide beak is an inherited trait that is chosen by the bird as a result of its experiences.
B
Having a long, narrow beak is an inherited trait that is genetically passed down.
C
Having a long, narrow beak is an acquired trait that is determined by the availability of food.
D
Having a short, wide beak is an acquired trait that is found in birds that have learned to adapt to the environmental changes.
2
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Which statement best describes how the environment influences the traits of an individual?

A
The environment influences the gene expression which can change the genotype.
B
The environment influences only external factors.
C
The environment influences the gene expression which can change the phenotype.
D
The environment influences only internal factors.
3

Which best describes an acquired trait?

A
An acquired trait is developed during one’s lifetime.
B
An acquired trait is not affected by one’s peers.
C
An acquired trait is passed from parent to offspring.
D
An acquired trait is encoded in the DNA.
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?

A
The puppies will be born with the ability to complete agility competitions.
B
The puppies are guaranteed to win agility competitions.
C
With training, the puppies are likely to excel at agility competitions.
D
Without training. the puppies are no more likely to succeed at agility competitions than any other dog.
5

Which statement best describes heredity?

A
Inherited traits are the result of an organism's experiences.
B
Individuals are born with acquired traits.
C
Acquired traits can be passed on to one's offspring.
D
Traits coded for in DNA are passed from parent to offspring.
6

Which is an acquired trait?

A
a tiger's stripes
B
a scar
C
eye color
D
blood type
7

Which trait is determined by genetics alone?

A
big muscles
B
athletic ability
C
blood type
D
skin color
9

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

A
A phenotype is an organism's allele combination. A genotype is the physical appearance of a trait in an organism, which may be influenced by the organism’s experiences.
B
A phenotype is an organism's allele combination, which may be influenced by the organism’s experiences. A genotype is the physical appearance of a trait in an organism.
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.
D
A genotype is an organism's allele combination, which may be influenced by the organism’s experiences. A phenotype is the physical appearance of a trait in an organism.
10

Which is an inherited trait?

A
hierarchical status of a wolf in a pack
B
ability to ride a bike
C
flavor of an apple from a particular tree
D
interest in stamp collecting

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