A Geneticist Is Studying Two Genes What Is the Probability That in a Randomly-Sampled Individual, Gene

question 63

Multiple Choice

A geneticist is studying two genes. Each gene can be either dominant or recessive. A sample of 100 individuals is categorized as follows.

$\begin{array} { c c c } & \text { Gene 2 } & \text { Gene 2 } \\\text { Dominant } & \text { Recessive } \\\text { Gene 1 Dominant } & 12 & 18 \\\text { Gene 1 Recessive } & 28 & 42\end{array}$

What is the probability that in a randomly-sampled individual, gene 2 is dominant?

• A) 0.70
• B) 0.12
• C) 0.40
• D) 0.60

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Definitions:

Indicator Species

Species that serve as a sign or indicator of the health or condition of an ecosystem, often sensitive to environmental changes.

Endemic Species

Species that are native to a specific geographical area and found nowhere else in the world.

Pioneer Species

The first species to colonize barren environments or freshly disturbed lands, often initiating ecological succession.

Ecological Niche

The role and position a species has in its environment, including all its interactions with the biotic and abiotic factors.