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deff fn [24]
3 years ago
14

Which is a single ring nitrogenous base

Biology
1 answer:
Viefleur [7K]3 years ago
5 0
Thymine, Cytosine, and Uracil and single ring nitrogenous bases (pyrimidines)
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Which of the following is an example of reproductive isolation? two populations of finches that cannot produce viable offspring
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The correct answer is A. Two populations of finches that cannot produce viable offspring

Explanation:

Reproductive isolation is a biological and evolutionary phenomenon that prevents two species from successfully reproducing, this means they cannot produce offspring or the offspring is not fertile, even if these species had a common ancestor. Additionally, as a result of reproductive isolation, each species keeps its genes and features. This phenomenon is best exemplified in "Two populations of finches that cannot produce viable offspring " because this refer to the barriers for different species to reproduce or produce viable offspring, which is the focus of reproductive isolation.

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