Temperature-Sensitive Alleles That Kill an Organism Only in a Particular

question 3

Multiple Choice

Temperature-sensitive alleles that kill an organism only in a particular temperature range are examples of ________.

• A) essential genes
• B) lethal alleles
• C) semilethal alleles
• D) nonessential genes
• E) conditional lethal alleles

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Definitions:

Tay-Sachs Disease

A genetic disorder characterized by the absence of a specific enzyme, resulting in the accumulation of fats in nerve cells, leading to death in early childhood.

Hemophilia A

A genetic disorder caused by missing or defective Factor VIII, a clotting protein, leading to prolonged bleeding after injury.

Hemoglobin Molecules

Oxygen-carrying proteins located in red blood cells, consisting of four subunits, each containing an iron atom that binds oxygen, allowing blood to transport oxygen throughout the body.

Polyploidy

The condition of having more than two complete sets of chromosomes in an organism, common in plants and some animal species.