A Dihybrid Testcross Is Made to Determine If Genes C

question 42

Multiple Choice

A dihybrid testcross is made to determine if genes C and D are linked.The results are shown in the table.
$\begin{array}{|l|c|r|}\hline \text { Parent genotypes: } & C c  D d \times c c d d & \\\hline & C c  D d & 222 \\\hline & C c  d d & 280 \\\hline \text { Progeny genotypes: } & c c  D d & 280 \\\hline & c c  d d & 218 \\\hline & & 1000 \\\hline\end{array}$
-Using the chi-square test for goodness of fit, how many degrees of freedom are in this data set?

• A)1
• B)2
• C)3

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Definitions:

Fractional Horsepower

Describes motors that have a power rating less than one horsepower, often used in low power applications such as household appliances and small machinery.

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Motors designed for specific applications or environments, offering unique features or capabilities not found in standard motors.

Affinity Laws

Mathematical equations that describe the relationship between variables such as flow, pressure, and power across fans, pumps, and other fluid dynamic systems.

Motor Speed

The rate at which an electric motor's shaft rotates, typically measured in revolutions per minute (RPM).