<span>Mitosis is a part of the cell cycle in which chromosomes in a cell nucleus are separated into two identical sets of chromosomes, each in its own nucleus. In <span>general, mitosis </span></span>
Answer:
1.Plant absorbing water from the soil.
Explanation:
Osmomsis occurs by the movement of a water from a region of higher concentration of water molecules to a region of lower concentration of water molecules, through a semi permeable membrane,
<em><u>OR</u></em>
It occurs as a result of movement of substance molecules from a region of lower concentration to a region of Higher concentration of the substance.
<em><u>Note</u></em><em><u>:</u></em> The higher the concentration of the substance molecules,the lower the concentration of water molecules.
The smaller a population, the greater the potential effect of genetic drift on gene frequencies.
Genetic drift is an evolutionary term which refers to the random changes in a population's allele frequencies. These changes happen by chance due to the random selection of alleles from the genetic pool in each generation. Genetic drift can lead to either loss of some alleles or the fixation of others (100% frequency). The effect of genetic drift is stronger in smaller populations. This is because, the larger the population, the larger the sample size and the slower the result of genetic drift.
Answer: molecule, cell, tissue, organ, organ system, organism, population, community, ecosystem, biosphere
Explanation:
Answer:
EtBr inserts between the stacked bases in the DNA double helix.
Explanation:
- EtBr is used for visualizing DNA bands as it fluoresces under the UV illumination.
- EtBr is an aromatic compound that is capable of inserting itself between the stacked bases of the DNA double helix.
- The hydrophobic environment around the base pairs where the EtBr intercalates is responsible for the fluorescence. As the EtBr molecule intercalates between these base pairs the cation of EtBr sheds the water molecules associated with it and this causes it to fluoresce under UV light as water is a quencher of fluorescence.
