In Some Parts of Africa, the Frequency of Heterozygosity for the Sickle-Cell

question 55

Multiple Choice

In some parts of Africa, the frequency of heterozygosity for the sickle-cell anemia allele is unusually high, presumably because this reduces the frequency of malaria. Such a relationship is related to which of the following?

• A) Mendel's law of independent assortment
• B) Mendel's law of segregation
• C) Darwin's explanation of natural selection
• D) the malarial parasite changing the allele

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Definitions:

Uncollectible Receivables

Receivables considered uncollectible by a company and therefore recorded as a loss.

Journalize

The process of recording transactions in the general journal using the double-entry bookkeeping system.

Allowance for Doubtful Accounts

A contra asset account used to estimate the portion of a company's accounts receivable that may not be collectible.

Uncollectible Receivables

Amounts owed to a company from customers that are considered unlikely to be collected.