In a Disconformity

question 21

Multiple Choice

In a disconformity:

• A) the sedimentary layers above and below the unconformity are parallel.
• B) the sedimentary layers below the unconformity are tilted.
• C) sedimentary rocks lie on older metamorphic rocks.
• D) sedimentary rocks lie on older igneous rocks.

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Definitions:

Monitor Lizards

A group of large lizards in the genus Varanus, known for their intelligence and predatory skills, found in Africa, Asia, and Oceania.

Venom Genes

Genetic sequences that code for the production of venom, a toxic substance used by some animals for defense or to capture prey.

Defensin Gene

A gene that codes for defensins, which are small cysteine-rich cationic proteins involved in the innate immune response.

Gene Recruitment

Gene recruitment refers to the co-option of a particular gene or network for a totally different function as a result of a mutation. The reorganization of a preexisting regulatory network can be a major evolutionary event.