In the Section "Investigating Life: Evolving Backwards," What Is the Significance

question 37

Multiple Choice

In the section "Investigating Life: Evolving Backwards," what is the significance of the marine fossil snakes (highlighted in the figure) ?

• A)Is an ancestor to modern-day snakes and has same anatomical organization as modern-day snakes
• B)Is an outgroup unrelated to modern-day snakes
• C)Has the same anatomical organization as modern-day snakes
• D)Has a common ancestor to modern-day snakes,but placed in a derived group
• E)Is the ancestor to modern-day snakes,but has different anatomical organization than modern-day snakes

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Definitions:

Blood test

A clinical analysis performed on a blood sample to evaluate general state of health or detect illnesses.

Fasting glucose

The level of glucose, or sugar, in the blood after a person has not eaten for a specified period, typically used for diabetic screening or monitoring.

Hematocrit determination

A laboratory test that measures the proportion of red blood cells in blood volume to assess an individual's blood composition.

Red blood cells

Specialized cells in the body responsible for carrying oxygen from the lungs to the rest of the body and returning carbon dioxide to be exhaled.