Which Trait Is the Best Example of an Adaptation

question 9

Multiple Choice

Which trait is the best example of an adaptation?

• A) A mutation resulting in a heat-resistant enzyme in a bacterium living in a hot spring
• B) A shorter neck in a giraffe that lives in an area with many rival males and tall trees
• C) A longer tongue in an insect-eating mammal that feeds on insects that live in shallow burrows
• D) A new mutation that confers Tay-Sachs disease in humans
• E) A mutation resulting in weak branches in a species of tree that lives in windy regions

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Definitions:

Placenta

An organ that develops in the uterus during pregnancy, providing oxygen and nutrients to and removing waste from the fetus through the umbilical cord.

Zygote

The initial cell formed when a new organism is conceived by the union of an egg and a sperm cell, containing genetic information from both parents.

Testosterone

A steroid hormone that plays a key role in the development of male reproductive tissues as well as promoting secondary sexual characteristics such as increased muscle and bone mass, and the growth of body hair.

Rudimentary Form

The most basic or primitive stage of development.