A Testcross Consists of

question 14

Multiple Choice

A testcross consists of

• A) a cross of two pure-breeding forms to find out which form of a gene is dominant.
• B) a cross between two unknown forms to determine their genotypes.
• C) a cross between an offspring and its parent.
• D) a cross of an F ₁ hybrid to an individual that is homozygous recessive.
• E) a cross of two F ₂ individuals to produce an F ₃ generation.

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Definitions:

Exhaustion Stage

The final phase of the stress response, where the body has depleted its energy resources by continually trying but failing to recover from stress.

General Adaptation Syndrome

A model that describes the body's response to stress in three stages: alarm, resistance, and exhaustion.

Immune System

The complex network of cells, tissues, and organs that work together to defend the body against infections and diseases.

Stressful Experiences

Events or conditions that cause strain or tension, often requiring an individual to adjust, cope, or adapt.