Answer: During lysogeny, the prophage will persist in the host chromosome until induction, which results in the excision of the viral genome from the host chromosome.
Explanation:
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The decay of Francium produces radium-223 (Ra-223) through a beta decay or into astatine-219 through an alpha decay. The atomic number of Francium is 87, and that of Astatine is 85.
<h3>What is beta decay?</h3>
Beta decay is a type of radioactive decay in which a beta ray is emitted from the nucleus of an atom. During the beta decay, a proton in the nucleus is transformed into a neutron and vice versa which results into change in the number of proton in the nucleus. If a proton is converted to a neutron, then it is said to be β+ decay. And, if a neutron is converted to a proton, then it is said to be β– decay.
In this reaction, an atom of Francium (Fr-223) is undergoing a beta decay to produce radium (Ra-88) by the conversion of a neutron into a proton.
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Answer:
Fossil records help scientists understand about how and when an organism might have evolved. It also helps determine how many evolutionary changes a particular specie might have gone through.
The long-term evolutionary patterns for a specie can be determined by fossils. Fossil record will help us analyze all the evolutionary changes that a species might have gone through to evolve into a particular type.
The gradual evolution of a species can be predicted if the fossil records show small, increment changes in the fossil patterns.
On the other hand, rapid evolution will result when there are no intermediate fossils depicted for a specie. That specie might have aroused due to a sudden change.
Because they change over time
B. Protistans, a group thought to have given rise to other eukaryotic cells
