How can Darwin's theory of evolution explain the necks in giraffes?

• A. Giraffes have always had long necks
• B. Giraffes must have bred with another species to acquire the long neck
• C. Giraffes needed to have long necks so they developed this acquired trait
• D. Giraffes with long necks were more likely to survive and pass on the gene

Antibiotic-resistant bacteria are causing an increase in deaths in modern society because:

• A. The world is a dirtier place than years ago
• B. The most "fit" bacteria are resistant to present day antibiotics and reproduce
• C. The lysosomes inside the bacteria break down antibiotics much faster now
• D. The bacteria are outsmarting scientists and have learned to work together

If newly inherited genes provide better adaptation to the environment, what would happen to the trait over time?

• A. The trait being inherited would disappear
• B. The inherited trait would be more common in the population
• C. No change in the population would occur
• D. The trait would be less common in the population

What organisms share the most recent common ancestor?

• A. Hamster and Chimpanzee
• B. Salmon and Hamster
• C. Salamander and Salmon
• D. Chimpanzee and Salmon

The dotted line shows the original population of birds w/ different beak sizes in a population. Which of the following is true?

• A. The medium beak is an advantage
• B. The medium beak is at a disadvantage
• C. The small beak is at a disadvantage
• D. All types of beaks have an equal advantage

The more closely related two organisms are the…

• Greater the similarity in their DNA sequences
• Lesser the similarity in their amino acid sequences
• Greater occurrence of analogous structures 
• Greater the differences in the DNA sequences

The similarity of the structures shown in the picture suggests that the organisms:

• Have a common ancestor
• Evolved slowly
• All grew at different rates
• Live for a long time

The similar structures shown in the picture are called:

• Vestigial Structures
• Homologous Structures
• Derived characteristics
• Common ancestors

humans, the pelvis and femur, or thigh bone, are involved in walking. In whales, the pelvis and femur shown are:

• Examples of fossils
• Vestigial structures
• Acquired traits
• Examples of natural variation

When organisms are said to be “related,” which type of evidence would best to determine the relationship?

• Types of cells they are made of
• Where the organisms came from
• The food they consume
• The amino acids created from DNA