In Your Backyard, You Step on a Dandelion and One

question 7

Multiple Choice

In your backyard, you step on a dandelion and one of its seeds gets trapped in the tread of your shoes. The next day, you go on a long hike in the wilderness wearing the same shoes. When you step in a mud puddle, the seed sticks in the mud. The seed grows into a dandelion, but no other dandelions are present to mate with it. This is an example of

• A)gene flow.
• B)genetic drift.
• C)natural selection.
• D)sexual selection.

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Definitions:

NADH

NADH denotes Nicotinamide Adenine Dinucleotide (reduced form), a coenzyme that plays a critical role in the production of energy through the process of cellular respiration.

Pyruvate

A key intermediary in the metabolic pathway of glycolysis, which can be further converted into energy through the Krebs cycle or fermented into lactate.

Citric Acid Cycle

A key metabolic pathway that generates energy through the oxidation of acetate derived from carbohydrates, fats, and proteins into carbon dioxide and captures the released energy in the form of ATP.

Oxaloacetic Acid

A four-carbon molecule that plays a crucial role in both the Krebs cycle and gluconeogenesis, acting as a substrate for the generation of various intermediates.