Natural selection and evolution

Structures that have a similar evolutionary origin and structure but are adapted for different purposes, such as a bat wing and a human arm, are called _____.

• homologous structures

• Vestigial structures

• analogous structures

• homozygous structures

Natural selection can best be defined as the _____.

• survival of the biggest and strongest organisms in a population

• elimination of the smallest organisms by the biggest organisms

• survival and reproduction of the organisms that occupy the largest area

• survival and reproduction of the organisms that are genetically best adapted to the environment

In _____ selection, individuals with both extreme forms of a trait are at a selective advantage (they are favored).

• directional

• disruptive

• stabilizing

The founder of modern evolution theory is considered to be _____.

• Alexander Oparin

• Stephen Jay Gould

• Charles Darwin

• Lynn Margulis

Upon close examination of the skeleton of an adult python, a pelvic girdle and leg bones can be observed. These features are an example of _____.

• homologous structures

• vestigial structures

• analogous structures

Which of the following is not a requirement for natural selection?

• There must be variation between individuals in a population

• Certain organisms will survive and reproduce others will not

• Certain traits are inherited form parents to offspring

• All individuals in the population are the same.

What variation did the rock pocket mice have to allow certain mice to survive better than others?

• Different sizes

• Different coat colors

• Sharp teeth and claws

• Immune to antibiotics

What advantage do spicy chili peppers have over non-spicy chili peppers?

• They are not eaten by rodents

• They have more stomata

• They are not eaten by birds

• They are not eaten by birds and rodents

Which of the following terms would not be associated with sexual selection?

• male to male competition

• female choice

• spicy peppers

• peacock feathers

_________ is an organism’s ability to survive and reproduce.

• Fitness

• Mimicry

• Camouflage

• Mutation