Traits Variation Quiz

Which of the following is an example of an environmental factor that can affect the traits of an organism?

• The genes inherited from its parents

• The amount of sunlight the organism receives

• The organism's blood type

• The number of chromosomes in the organism's cells

What is genetic variation?

• Changes in the environment that affect how organisms develop

• The process of selecting certain organisms for breeding based on desired traits

• Differences in DNA among individuals within a species

• The practice of moving genes from one organism to another

Which of the following is NOT a result of genetic variation?

• Different flower colors in the same species of plant

• A litter of puppies having various fur colors

• A tree growing taller because it is in a sunny spot

• People having different eye colors

How can environmental factors influence the traits of organisms?

• By changing the DNA sequence of the organisms

• By affecting which traits are beneficial for survival and reproduction

• By selecting which organisms are allowed to breed

• By directly causing organisms to grow larger or smaller

Why is genetic variation important for the survival of a species?

• It ensures that all members of the species look exactly the same

• It allows a species to adapt to changes in the environment

• It prevents the species from reproducing

• It makes selective breeding impossible

How do environmental factors and genetic variation work together to influence the traits of organisms?

• Environmental factors can select for certain genetic variations that are more advantageous, leading to changes in the traits of a population over time.

• Genetic variation eliminates the need for organisms to adapt to environmental factors.

• Environmental factors change the genetic makeup of organisms directly.

• Genetic variation has no real impact on how organisms respond to environmental factors.

____ carry the information for the inherited traits in a living thing.

• cells

• genes

• trait

• animals

An insect that goes through three stages during its life cycle experiences _____ metamorphosis.

• complete

• incomplete

An insect that goes through four stages during its life cycle experiences _____ metamorphosis.

• complete

• incomplete

Which of the following helps a polar bear live and survive in its habitat?

• brown fur

• thick fur

• long tail

• large ears