Answer:
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Answer:
Since there are many factors that can produce a mutation, the event that would be most likely to cause a mutation is a nucleotide is inserted into a DNA strand.
Explanation:
A genetic mutation involves an alteration of the DNA that leads to a defect in protein synthesis and a structural or functional alteration of an individual.
Of all the factors that can produce a mutation, the insertion of one or two nucleotides into the DNA strand produces a point mutation, or molecular mutation, of the insertion type.
<em> The other options are not correct because the processes of </em><em><u>mRNA traveling out of the nucleus</u></em><em>, </em><em><u>mRNA releasing from the DNA strand</u></em><em> or </em><em><u>enzymatic transcription of mRNA</u></em><em> in the nucleus can carry over a mutation produced in the DNA, but they are not mutation-producing factors.</em>
Answer:
Two DNA molecules, containing the same genetic code as the original DNA molecule, are produced.
Explanation:
DNA replication is a very important process that must occur in every living cell prior to cellular division. It is the process by which a DNA molecule makes another copy of itself i.e. duplicates itself, to form two identical molecules of DNA.
In the process of DNA replication, the double-stranded molecule first unwinds to form two single strands of DNA. Each DNA strand serves as a template for making another complementary strand of DNA. At the end of replication, each copy of DNA molecule contains one new strand and one old strand. Both copies contain the same genetic code as the original DNA molecule.
Texture gradient is the change in size which closer objects have compared to objects farther away. It also involves groups of objects appearing denser or more blurry as they move farther away.
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Answer: B) Circadian rhythms evolved in a common ancestor to life and is present in all life forms.
The circadian rhythms comes to play because of the evolution of different pathways and molecular mechanisms over the time in different species in relations to its environment and varying changes.
Explanation:
Circadian clocks are believed to have evolved in parallel with the geological history of the earth, and have since been fine-tuned under selection pressures imposed by cyclic factors in the environment.
Evolution has selected a system of two intertwined cell cycles: the cell division cycle (CDC) and the daily (circadian) biological clock. The circadian clock keeps track of solar time and programs biological processes to occur at environmentally appropriate times. One of these processes is the CDC, which is often gated by the circadian clock.
