After Mutagenesis and Screening, You Have Found a Mutant That

question 30

Multiple Choice

After mutagenesis and screening, you have found a mutant that is able to grow in soil with high salt content. Chemical analysis showed that this plant has a decreased amount of Na⁺ relative to normal plants. What kind of mutation do you predict this plant contains?

• A) mutation in the plasma membrane sodium channel
• B) mutation within the Casparian strip
• C) mutation in the tonoplast sodium channel
• D) mutation in the metallothioneins
• E) mutation in the tonoplast antiporter

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Definitions:

Inferior

A term used in anatomy to describe a position lower in the body or closer to the feet compared to another structure in the standard anatomical position.

Lateral

Positioned on the side or pertaining to the side of a structure or body part.

Sternum

A long flat bone located in the center of the chest, which connects to the ribs via cartilage to form the front part of the rib cage.