You Are Keeping a Planarian Flatworm in a Dish and Notice

question 62

Multiple Choice

You are keeping a planarian flatworm in a dish and notice that after a period of time the animal has pulled itself in two and each half has regenerated the lost half.From this you can surmise that the two animals

• A) are genetically identical.
• B) share the same mitochondrial DNA but not the same nuclear DNA.
• C) are the result of sexual reproduction.
• D) are haploid.
• E) are unable to reproduce sexually.

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Definitions:

Heredity

Hereditary conveyance of traits, including both physical and psychological attributes, between generations.

Adoption Studies

Research methods that compare genetically related individuals raised apart with those raised together to understand the influence of genetics and environment.

Resemblance

The degree of similarity or likeness between two persons, objects, or concepts.

IQ

Intelligence Quotient, a measure of a person's intellectual abilities in relation to their age group.