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A scientist is trying to determine how closely related a moth species (Species Z) is to four other moth species (Species A, B, C, and D). He examined the DNA of each species and compared it to the study subject. He then created this table:

\begin{tabular}{|c|c|}
\hline
Species & \# of genetic differences \\
\hline
Species A & 12 \\
\hline
Species B & 3 \\
\hline
Species C & 14 \\
\hline
Species D & 28 \\
\hline
\end{tabular}

Which species is most closely related to the moth species (Species Z)?

A. Species A
B. Species B
C. Species C
D. Species D



Answer :

GinnyAnswer
To determine which species is most closely related to moth Species Z, we need to look at the number of genetic differences between Species Z and each of the other species. The species with the fewest genetic differences is the most closely related to Species Z.

Let's examine the given table:

[tex]\[ \begin{array}{|c|c|} \hline \text{Species} & \text{\# of genetic differences} \\ \hline \text{Species A} & 12 \\ \hline \text{Species B} & 3 \\ \hline \text{Species C} & 14 \\ \hline \text{Species D} & 28 \\ \hline \end{array} \][/tex]

Here are the genetic differences for each species compared to Species Z:

- Species A has 12 genetic differences.
- Species B has 3 genetic differences.
- Species C has 14 genetic differences.
- Species D has 28 genetic differences.

The species with the smallest number of genetic differences is Species B, with only 3 genetic differences.

Therefore, the species most closely related to Species Z is Species B.

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