Children Born with Down Syndrome Have Inherited an Extra Chromosome

question 53

Multiple Choice

Children born with Down syndrome have inherited an extra chromosome, so their diploid number is 47 rather than 46 chromosomes. What is this genetic condition called?

• A) trisomy 21
• B) triploid
• C) haploid 21
• D) monoploidy

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Definitions:

Unit of Resource

A specific quantity of a resource or input used in the production of goods or services.

Deforestation

The removal of a forest or stand of trees from land which is then converted to a non-forest use, often resulting in ecological imbalance.

Forest Cover

The proportion of land area that is covered by forests, which is crucial for biodiversity, climate regulation, and ecosystem services.