Viruses are not living organisms because they lack the ability to produce.
Answer:
Ethylene gas
Explanation:
The gas is produced in trace amount by plants (virtually every part of the plant is capable of producing ethylene because it is a gas and it diffuses) and has an effect on plants. Ethylene gas is responsible for ripening of fruits, opening up of flowers and senescence and abscission of leaves. Also, when one puts a ripening fruit among unripe fruits, the unripe ones will ripen in a matter of days – because the ripe one produces ethylene gas which has en effect on the others. Commercially, farmers harvest fully developed bu unripe fruits and then expose them to ethylene gas to ripen when they reach the market. This alleviates food spoilage in transit.
Mutations result from an error in DNA replication, should it be from an alien source (like radiation) or simply a mistake in replication. Migration of organisms to a new population would alter the DNA by adding new genes, but it would not mutate them.
Answer:
DNA fingerprinting is a laboratory technique used to establish a link between biological evidence and a suspect in a criminal investigation. A DNA sample taken from a crime scene is compared with a DNA sample from a suspect. If the two DNA profiles are a match, then the evidence came from that suspect.
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