"Dumpy" Is a Commonly Used Mutant Phenotype in the Nematode

question 44

Multiple Choice

"Dumpy" is a commonly used mutant phenotype in the nematode worm C.elegans.Two "Dumpy" individuals are crossed to each other,and this cross produces 210 "Dumpy" and 68 wild-type individuals.If one of the "Dumpy" individuals used in this cross was mated with a wild type,what "Dumpy": wild-type ratio would we observe in the offspring?

• A)0:1
• B)1:0
• C)1:1
• D)1:3
• E)3:1

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Definitions:

Annual Fixed Expenses

Expenses that do not change in total regardless of changes in the volume of activity or production levels, such as rent or salaries.

Contribution Margin

The amount remaining from sales revenue after variable expenses are deducted, showing how much contributes to covering fixed costs and earning profit.

Break-even Point

The level of production or sales at which total revenues equal total expenses, resulting in no net profit or loss.

Fixed Expenses

Costs that do not fluctuate with the level of production or sales, such as rent, salaries, and insurance premiums.