<em><u>The</u><u> </u><u>three</u><u> </u><u>methods</u><u> </u><u>employed</u><u> </u><u>by</u><u> </u><u>bacteria</u><u> </u><u>for</u><u> </u><u>horizontal</u><u> </u><u>transfer</u><u> </u><u>of</u><u> </u><u>genetic</u><u> </u><u>information</u><u> </u><u>are</u><u>:</u><u>-</u></em>
- <em>Conjugation</em>
- <em>Transformation</em>
- <em>Transduction</em>
Light reaction occurs in presence of light while in dark reaction light is not needed
Wealthy men of the last century
Answer:
c. Directional selection
Explanation:
Directional selection is a type of natural selection that occurs when selective pressure favors one extreme phenotype over any other phenotype existing in a population. Only one extreme phenotype is favored over time.
A good example of directional selection is the natural selection that occurs in giraffes, where alleles for long necks were favored against alleles for short necks as a result of selection pressure among the different phenotypes. Over time, giraffes having long necks dominated the population as the distribution of length of neck shifts towards the phenotype for long necks.
A monomer can be defined as the molecule that is capable of binding in long chains. The monomers bind together to form different polymers by the process of polymerization.
The monomer of carbohydrate is monosacchride. The monomer of proteins is amino acid, and that of lipids is glycerol and fatty acids. These three macromolecules are wrongly paired in the question.
The monomer of nucleic acids is nucleotide. This is correctly matched.
Hence, the correct answer is 'Option B - nucleic acids - nucleotides'.
