A restriction-fragment length polymorphism at a site in the X chromosome has three alleles, A1, A2, and A3. The gel below is the DNA fingerprint for two girls who have the same parents. What is the genotype of the mother? Of the father? 
Definitions:
Debit
An accounting entry that increases asset or expense accounts or decreases liability, equity, or revenue accounts.
Credit
A financial arrangement where a borrower receives something of value now and agrees to repay the lender at a later date, generally with interest.
Double-entry System
An accounting system where every transaction is recorded in at least two accounts, with debits equaling credits, ensuring the accounting equation is always in balance.
Revenues
The total income generated from the sale of goods and services before any expenses are subtracted.
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