Almost All of the World's Inhabitants Are Living on This

question 18

Multiple Choice

Almost all of the world's inhabitants are living on this percentage of the total land surface.

• A)85%
• B)50%
• C)25%
• D)10%
• E)4%

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Definitions:

Type O Blood

A blood type characterized by the absence of A and B antigens on the surface of red blood cells, making it universally compatible as a donor.

Type AB Blood

A blood type in the ABO blood group system that has both A and B antigens on the surface of the red blood cells and no antibodies in the plasma against either antigen.

Dosage Compensation

A mechanism to balance the expression of X-chromosomal genes in organisms with sex chromosomes, ensuring that one sex does not have double the gene products of the other.

Sex Chromosomes

Chromosomes that determine the sex of an organism, with common configurations including XX for females and XY for males in many species.