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Which statement correctly describes the relationship between evolution and natural selection?

Examine the tree below. For the pairs of species listed below, select the node (the letter) that is their most recent common ancestor. 1) Dinosaurs and Fish: the most recent common ancestor is [node1] 2) Other Birds and Mammals: the most recent common ancestor is [node2] 3) Amphibians and Mammals: the most recent common ancestor is [node3]

A “Jaglion” is the offspring between a male Jaguar and a female Lion. Jaglions have only been born in zoos and animal sanctuaries. Jaglions are able to live to adulthood. It is unknown whether Jaglions are able to produce viable, fertile offspring. If researchers find that Jaglions produce offspring that cannot reproduce, would you conclude that Jaguars and Lions are the same species or different species? Remember the definition of species that we discussed in class and in the pre-class video.

Achromatopsia, a form of colorblindness, affects an estimated 1 in 30,000 people worldwide.  Pingelap is an island and part of the Federated States of Micronesia. In the late 18th century a typhoon hit and the human population on the island went from 500 people to about 20 people. The survivors reproduced and by the 1900s the population was back to about 600 people. However, the incidence for achromatopsia in the Pingelap population is now about 1 in 1,800 people. Which process of evolution has most likely occurred?

  The two sets of pie charts above show two possible results from a study like the Rosenberg study that we examined in class. Both possibilities show possible results for the same locus. Colors show different alleles. For each statement, select whether possibility 1, possibility 2, neither possibility, or both possibilities support the statement. Options may be used more than once.   Prediction 1) There is more variation within geographic regions than between geographic regions. [blank1]   Prediction 2) There is more variation between geographic regions than within geographic regions. [blank2]   Prediction 3) It is possible to identify someone’s geographic origin based on their allele at this locus. [blank3]   Prediction 4) It is impossible to identify someone’s geographic origin based on their allele at this locus. [blank4]

A scientist wants to study bird predation of peppered moths. In a natural environment, they put light moths and dark moths on the trunks of trees and observe the moths for 30 minutes. The scientist records if each moth was eaten.  What was the independent variable in this experiment?

Tellurium

Bismuth

Argon

Co