Many Male Insects Have Specific Structures (Intromittent Organs) That Allow

question 22

Multiple Choice

Many male insects have specific structures (intromittent organs) that allow transfer of sperm internally to a female's reproductive tract. These structures have a specific morphology that only fits into the reproductive tract of a female of the same species, and results in internal fertilization. Having the lock-and-key fit also provides a:

• A)pre-zygotic isolating mechanism.
• B)post-zygotic isolating mechanism.

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Definitions:

Case Studies

In-depth investigations of a single person, group, event, or community over a period of time, used in various scientific and academic fields to gather detailed information.

Secondary Data

Data that was collected by someone else or for a purpose other than the current research project.

Independent Variable

In an experiment, the variable that is manipulated or changed to observe its effects on the dependent variable.

Control Group

In an experiment, the group of participants that does not receive the experimental treatment, used as a baseline to measure how the other tested groups do.