inheritance and evolution

What is the term for the process by which individuals that are better suited to their environment survive and reproduce most successfully?

• Genetic drift

• Natural selection

• Gene flow

• Mutation

Which scientist is credited with the theory of evolution by natural selection?

• Gregor Mendel

• Isaac Newton

• Charles Darwin

• Louis Pasteur

What is an adaptation?

• A random change in a gene

• A trait that increases an organism's ability to survive and reproduce

• The process by which a species becomes extinct

• A competition between species

What is the term for the genetic makeup of an organism?

• Phenotype

• Genotype

• Allele

• Chromosome

Which of the following is an example of a behavioral adaptation?

• The thick fur of a polar bear

• The long neck of a giraffe

• Birds migrating south for the winter

• The green color of a leaf

What is the term for the observable characteristics of an organism?

• Genotype

• Phenotype

• Allele

• Gene

Which of the following can introduce new genetic variations into a population?

• Natural disasters

• Selective breeding

• Mutations

• All of the above

What is the term for the different forms of a gene?

• Genotypes

• Phenotypes

• Alleles

• Traits

How are traits inherited from parents to offspring?

• Through acquired characteristics

• Through use and disuse of organs

• Through genes contained in chromosomes

• Through environmental influences

What sort of letter should be used for a dominant characteristic?

• a lower case letter

• an upper case letter

• it does not matter

• a number