7EF Exit Ticket

The salamanders of the genus Ambystoma in northeastern North America are an entirely female population that reproduces asexually through the process of cloning. However, they have developed a way of inserting DNA from other species of salamanders into their own DNA. How has DNA from other salamander species helped these Ambystoma salamanders survive environmental changes over the past 6 million years?

• By decreasing the mutations that occur in the DNA

• By increasing genetic diversity in the population

• By making the DNA more similar across the population

• By creating many genetically identical individuals

Green anoles are lizards that can change their skin color rapidly in response to various stimuli. This adaptation is the result of —

• selective breeding of lizards by humans

• beneficial traits passed from parents to offspring

• geographic isolation that prevented genetic mutation

• environmental pollutants that changed their genotype

Most animals avoid eating monarch butterflies due to their bad taste. Viceroy butterflies look very similar to the monarchs. Which of these best explains how the viceroy butterfly benefits from looking like the monarch butterfly?

• Viceroy butterflies are able to reproduce with the monarch butterflies.

• Viceroy butterflies are able to deter predators in the same way as the monarch butterflies.

• Viceroy butterflies are able to follow the migratory patterns of the monarch butterflies.

• Viceroy butterflies are able to find additional sources of food used by the monarch butterflies.

The features of Mexican long-nosed bats are evidence of natural selection because the features are adaptations that —

• lead to an increase in predation by other species of animals

• show that most DNA mutations are necessary and advantageous but do not increase survival or reproductive success

• help individuals outcompete other individuals for food resources to increase survival and reproductive success

• are the result of intentional breeding

Cross-pollination of flowers from different populations of the same species will most likely result in —

• gene flow as new alleles are introduced

• evolution of a different species as alleles mix

• hybrid sterility as gametes from different individuals are incompatible

• a decrease of genetic variation among individuals