Genetic variation is generated in the ciliate Paramecium when:
a. a micronucleus replicates its genome many times and becomes a macronucleus.
b. zoospores, which are gametes, fuse.
c. micronuclei are exchanged in conjugation
d. mutations occur in the many copies of the genome contained in the macronucleus and are passed onto offspring.
e. plasmids are exchanged in conjugation
Answer: C
Biology
- Which of the following statements about adaptive radiation is correct?
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- What evidence points to the date of the appearance of the first oxygen-producing organisms?
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- Animals first appeared during the _____.
- The Cenozoic era began approximately _____ million years ago.
- ____ were the dominant vertebrate life form during the Mesozoic era.
- Most modern animal phyla evolved during the _____ era.
- Bony fish first evolved during the _____ .
- Life arose during the _____.
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- The Mesozoic era began approximately _____ million years ago.
- The Precambrian time began at least _____ million years ago.
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- Reptiles first appeared during the _____ era.
- We are living during the _____era.
- Dinosaurs went extinct during the _____.
- _____ were the dominant vertebrate life form during the Paleozoic era.
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