Males and Females Express the Same Amount of X-Chromosome Genes

question 10

Multiple Choice

Males and females express the same amount of X-chromosome genes despite the fact that females have more X chromosomes.Animals approach this problem in different ways.Which of the following is an example?

• A)Female Caenorhabditis elegans express X-chromosome genes at 50%.
• B)Male fruit flies double the expression of their X-chromosome genes.
• C)Female humans inactivate one of their X chromosomes.
• D)all of the above
• E)none of the above

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Definitions:

Intertype Competition

Competition between very dissimilar types of retail outlets that results from a scrambled merchandising policy.

Scrambled Merchandising

Offering several unrelated product lines in a single store.

Hypermarkets

Large retail stores that combine a supermarket and a department store, offering a wide range of products under one roof.

Carrefour

A French multinational retail corporation and one of the largest hypermarket chains in the world, offering a wide range of products including groceries, clothing, and electronics.