Macroevolution May Have Been Caused by

question 89

Multiple Choice

Macroevolution may have been caused by

• A) changes in homeotic genes.
• B) small, cumulative genetic changes.
• C) exaptation.
• D) allopatric speciation.
• E) more than one of these.

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Definitions:

Mesentery

A double layer of peritoneum that attaches the intestines to the wall of the abdomen, providing support and containing blood vessels, nerves, and lymphatics.

Serous Membrane

A thin membrane that lines certain internal cavities, producing serous fluid to reduce friction between internal organs.

Abdominal Organs

The organs within the abdominal cavity, including the stomach, liver, gallbladder, pancreas, intestines, and kidneys.

Diaphragm

A large, dome-shaped muscle located at the base of the lungs and chest that plays a crucial role in breathing.