Below Are Shown Segments of DNA from Three Species of Flies.Species

question 158

Multiple Choice

Below are shown segments of DNA from three species of flies.Species 1 is the common ancestor of species 2 and species 3, and we have access to its DNA because it was preserved in amber. Species 1: AACTACTGCACGCTCATA
Species 2: AACTAGTGCTCGCTCACA
Species 3: AATTACTGCACGCTCACA
There have been _______ single and _______ parallel changes as species 2 and 3 evolved from species 1.

• A) two; zero
• B) two; one
• C) three; zero
• D) three; one
• E) four; zero

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Definitions:

Direct Method

A cash flow statement preparation approach that lists major cash receipts and payments during the period.

Bad Debts Recovered

Previously written off debts that have unexpectedly been collected.

Allowance Method

An accounting technique used to estimate and account for bad debts, allowing companies to anticipate uncollectible accounts receivables.

Bad Debts Expense

An expense account reflecting the value of sales that were made on credit and are unlikely to be collected.