Exhibit 20-7 ​

question 166

Multiple Choice

Exhibit 20-7
​

-Refer to Exhibit 20-7. For graph (3) , if the price of Y is $200, the price of X is

• A)$50.
• B)$40.
• C)$30.
• D)$25.
• E)$15.

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Definitions:

Twisted Ladder

A common metaphor used to describe the double helix structure of DNA, highlighting its two strands wound around each other.

X-Shaped Chromosomes

A description referring to the appearance of the X chromosome, one of the two sex chromosomes in many organisms, including humans.

Y-Shaped Chromosome

A reference to the Y chromosome, one of the two sex chromosomes in mammals, including humans, responsible for determining male biological characteristics.

Female

Pertaining to the sex that is typically characterized by the presence of two X chromosomes and is capable of bearing offspring or producing eggs.