Fraternal Twins Develop When

question 33

Multiple Choice

Fraternal twins develop when:

• A)one egg is fertilized by two sperm.
• B)two eggs are fertilized by one sperm.
• C)multiple ovulations occur, and two eggs are fertilized.
• D)one egg is fertilized by one sperm, but the resulting cells separate from one another and continue development.

Identify behaviors and conditions associated with disrupted sleep.

Understand the physiological mechanisms influencing sleep and wakefulness.

Understand the implications of sleep disorders on daily activities and safety.

Recognize the importance of diagnostic evaluations in identifying sleep-related problems.

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Definitions:

Genetic Material

The molecules inside cells that carry genetic information, primarily DNA and RNA, which determine hereditary characteristics.

Natural Selection

A process in biological evolution where organisms with traits better suited to their environment are more likely to survive and reproduce.

Gene Flow

The transfer of genetic variants or alleles from one population to another, which can lead to changes in genetic diversity.

Mutation

A change in the DNA sequence of an organism's genome, which can result in a variation in physical appearance, behavior, or health.