Amino acids are the building blocks of life
Answer:
The questions does not have any options.
Explanation:
In this case, the possible options are:
- Organisms with more genes will likely have more mutations per generation.
- More selection of mutations can occur in a shorter period of time for bacteria that replicate each twenty minutes than for humans with a (roughly) 20-year generation span.
- Organisms vary in the proportion of DNA that is active and in the percent of loci that have multiple alleles.
- All of the choices are correct- is the correct answer.
Organisms carrying more genes may have more mutations per every generation. Bacteria which replicate by means of asexual reproduction and which are haploid, reproduce after every 20 minutes, and chances of mutation in them occurs more rapidly.
Different organisms vary in the proportion of DNA that is active and in the percent of loci that have multiple alleles.
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Explanation:
Selection pressure means factors that contribute to selection which variations will provide the individual with an increase chance of surviving over others. Because of selective pressures, organisms with certain phenotypes have an advantage when it comes to survival and reproduction. Over time, this leads to evolution.
Geographic isolation leads to allopatric speciation
Explanation:
-One species could split into two if a physical barrier (such as a new river, divided its geographic range)
- If the barrier is large enough, gene flow between them would cease and the two separate populations would evolve independently.
- Different alleles would be fixed in them; because of the hazards of mutation and drift, or because selection favored different characters in the two.
- Then if the barrier is removed and the populations are reunited, they might remain distinct from each other.
- There would now be two species where there was formerly one.