Biology, 20.09.2020 07:01 ErikHabdlowich
When transcription occurs in eukaryotic cells, a DNA strand is copied to an mRNA strand that contains
introns and exons. Which of the two is needed for the production of proteins, and why?
Introns because they are coding sequences.
Exons because they are coding sequences.
Introns because they are non-coding sequences.
Exons because they are non-coding sequences.
Answers: 1
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Groups of organisms with low biotic potential, such as gray whales, that produce at most one offspring every other year a) are r-selected b) are k-selected c) are not subject to density-dependent limiting factors d) show the initial stages of the extinction process e) have escaped from the processes of natural selection and adaptation
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Biology, 22.06.2019 04:00
The wings of insects, birds, and bats evolved independently but carry out similar functions. this is an example of a. analogous structures. b. embryonic structures. c. vestigial structures. d. homologous structures.
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Biology, 22.06.2019 06:00
Explain why ecosystem diversity results in species diversity in a healthy biosphere
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When transcription occurs in eukaryotic cells, a DNA strand is copied to an mRNA strand that contain...
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