It has been observed that organisms on islands are different from, but closely related to, similar forms found on the nearest continent. This is taken as evidence that ________.

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#Question id: 4620

#XL - S Microbiology

The upper forelimbs of humans and bats have fairly similar skeletal structures, whereas the corresponding bones in whales have very different shapes and proportions. However, genetic data suggest that all three kinds of organisms diverged from a common ancestor at about the same time. Which of the following is the most likely explanation for these data?

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#Question id: 16480

#XL - R Botany

What are primary cell cultures 

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#Question id: 13203

#XL - R Botany

Intermediary cells are specialized companion cells that are involved in phloem loading in the plant. Which of the following pathway that have included the intermediary-type companion cells?

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#Question id: 4932

#XL - T Zoology

Which of the following is the best hypothesis regarding origins of nucleic acids?

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#Question id: 3453

#XL - T Zoology

The degree of genetic relatedness between the offspring and their parents is