Evolution

Which of the following is NOT an example of natural selection?

• Bacteria becoming resistant to antibiotics

• Insect populations developing resistance to certain pesticides

• Male birds of certain species inheriting colorful feathers that attract females more

• People selectively breeding hamsters based on their size

Many different groups of organisms have wings, even though their common ancestor did not have wings. This is because they evolved in environments with similar selective pressures. Wings are an example of a(n) ___________ structure.

• analogous

• vestigial

• homologous

• foreign

A flood drowns a large portion of an insect population. Afterward, only a few random individuals have survived. This is an example of ________________.

• genetic drift

• artificial selection

• adaptation

• natural selection

Which statement is supported by this cladogram?

• Hippopotamuses are more closely related to cows than to javelinas

• Toothed whales are more closely related to mouse deer than to hippopotamuses

• Javelinas and pigs are more closely related than baleen whales and toothed whales

• Cows and mouse deer are more closely related than javelinas and pigs

Which of these does NOT cause genetic variation?

• crossing over in meiosis

• acquired traits

• mutations

• gene flow

The pelvic bone of whales is not needed for movement within the water. This is an example of a(n) _____________ structure.

• analogous

• vestigial

• homologous

• foreign

The Linnaean taxonomic system classifies organisms into divisions called taxa. If two organisms belong to the same taxonomic group, they are related. Similarity at which of these levels indicates the CLOSEST relationship?

• Kingdom

• Class

• Order

• Genus

A student wants to use the following Venn Diagram to show the characteristics of two kingdoms of organisms. The characteristics that the two kingdoms share will be listed in the shaded area where the circles intersect.

Which of these is a characteristic that the student should list in the shaded part of the diagram for Kingdoms Fungi and Plantae?

• Heterotrophic

• Mobile

• Prokaryotic

• Multicellular

The forelimbs of mammals have similar anatomy because these groups descended from a recent common ancestor. Their bone structure is an example of a(n) ___________ structure.

• analogous

• vestigial

• homologous

• foreign

A cladogram is shown in the image.

All the animals to the right of the hagfish would have the common characteristic of --

• fur

• claws or nails

• lungs

• jaws