The Evolution of Notochord Development in Ascidians Is Best Explained

question 1

Multiple Choice

The evolution of notochord development in ascidians is best explained by

• A)a new gene mutation.
• B)the co-option of an existing gene for a new function.
• C)homoplastic convergence.
• D)gene duplication and divergence.
• E)conserved genes.

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Definitions:

Indwelling Urinary Catheter

A tube inserted into the bladder through the urethra to collect urine, often used for patients unable to urinate on their own.

Deflated

Feeling of being let down or reduced in spirit, morale, or volume, often used metaphorically to describe emotions.

Withdraw

The act of removing, taking back, or retreating from a position or situation.

Urinary Catheterization

The insertion of a catheter into the bladder through the urethra to drain urine, used for patients who cannot urinate naturally.