The table below summarizes Mendel's results for the [tex]F_2[/tex] generation.

Mendel's Results

\begin{tabular}{|l|l|l|}
\hline
Plant height & 787 tall & 277 short \\
\hline
Flower color & 705 purple & 224 white \\
\hline
Pod color & 428 green & 152 yellow \\
\hline
Pod shape & 882 inflated & 299 constricted \\
\hline
Seed color & 6,022 yellow & [tex]x[/tex] green \\
\hline
Seed shape & 5,474 smooth & 1,850 wrinkled \\
\hline
\end{tabular}

What number should replace the letter [tex]x[/tex] in the "Seed color" row?

A. 18,066
B. 3,011
C. 207
D. 2,001



Answer :

To determine the value that should replace [tex]$x$[/tex] in the "Seed color" row, we need to use the data provided in the table:

First, let's sum the known quantities for each characteristic:

1. Plant height:
- Tall: \(787\)
- Short: \(277\)
- Total: \(787 + 277 = 1064\)

2. Flower color:
- Purple: \(705\)
- White: \(224\)
- Total: \(705 + 224 = 929\)

3. Pod color:
- Green: \(428\)
- Yellow: \(152\)
- Total: \(428 + 152 = 580\)

4. Pod shape:
- Inflated: \(882\)
- Constricted: \(299\)
- Total: \(882 + 299 = 1181\)

5. Seed shape:
- Smooth: \(5474\)
- Wrinkled: \(1850\)
- Total: \(5474 + 1850 = 7324\)

Next, we know the total number of seeds for "Seed color":
- Yellow: \(6022\)

Let’s first calculate the total number of all counts where we have the number. We add all the sums we computed:

[tex]\[ 1064 + 929 + 580 + 1181 + 7324 + 6022 \][/tex]
[tex]\[ 1064 + 929 = 1993 \][/tex]
[tex]\[ 1993 + 580 = 2573 \][/tex]
[tex]\[ 2573 + 1181 = 3754 \][/tex]
[tex]\[ 3754 + 7324 = 11078 \][/tex]
[tex]\[ 11078 + 6022 = 17100 \][/tex]

Now, the observation from the \(F_2\) generation says the total (including the unknown \(x\)) should be 18,066. Therefore, we set up the equation to find \(x\):
[tex]\[ 17100 + x = 18066 \][/tex]

Solving for \(x\):
[tex]\[ x = 18066 - 17100 \][/tex]
\[
x = 966
]

Thus, based on the provided data and necessary arithmetic operations, we conclude that the number that should replace [tex]\(x\)[/tex] in the "Seed color" row is [tex]\(4118\)[/tex].