1
Question
Read the passage and answer the following questions:
A population of birds (population A) on
a remote, isolated island is studied to determine beak length. The
resulting data are plotted in Figure 1.
Figure 1
Suppose
that 200 years later, the beaks of the birds on the island were again
measured (Population B). The data, when plotted, yielded a graph as in
Figure 2.
Figure 2
Suppose that a researcher studying Population B found that birds with beaks of 20 mm were unable to mate with birds that had 40 mm beaks. These two groups of birds would now be classified as
Read the passage and answer the following questions:
A population of birds (population A) on a remote, isolated island is studied to determine beak length. The resulting data are plotted in Figure 1.
Figure 1
Suppose that 200 years later, the beaks of the birds on the island were again measured (Population B). The data, when plotted, yielded a graph as in Figure 2.
Figure 2
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Solution
The correct option is B Separate species
Species is group of individuals that can potentially interbreed to produce fertile offspring. Splitting of existing species into daughter species or transformation of existing species into new one without formation of any lineage species is termed as speciation. Since birds with beak size 20 mm and 40 mm were not able to mate, these two would be now considered as separate species. Therefore, the correct answer is option B.
Species is group of individuals that can potentially interbreed to produce fertile offspring. Splitting of existing species into daughter species or transformation of existing species into new one without formation of any lineage species is termed as speciation. Since birds with beak size 20 mm and 40 mm were not able to mate, these two would be now considered as separate species.
Therefore, the correct answer is option B.
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