Answer:
Explanation:
Although protons resemble other positive ions such as Na+ and K+ in their movement across membranes, in some respects they are unique. Hydrogen atoms are by far the most abundant type of atom in living organisms; they are plentiful not only in all carbon-containing biological molecules, but also in the water molecules that surround them. The protons in water are highly mobile, flickering through the hydrogen-bonded network of water molecules by rapidly dissociating from one water molecule to associate with its neighbor, Protons are thought to move across a protein pump embedded in a lipid bilayer in a similar way: they transfer from one amino acid side chain to another, following a special channel through the protein.
After putting distilled water in Elodea, the cells of Elodea represent a hypotonic solution, yet the cells do not burst because of the cell wall.
<h3>What is a hypotonic solution? </h3>
A solution that contains fewer dissolved particles than exists found in normal cells and blood. In this solution the cells obtain swell.
A hypotonic solution contains a lower concentration of solutes than another solution. In biology, a solution outside of a cell exists named hypotonic if it contains a lower concentration of solutes relative to the cytosol. Due to osmotic pressure, water diffuses into the cell, and the cell often seems turgid, or excessive.
The Chloroplast exists spread throughout the cell both before the salt solution, and after the distilled water exists put on the slide. Distilled water symbolizes a hypotonic solution, yet the cells do not demolished because of the cell wall.
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Answer:
The correct answer is: C) The alleles have an additive effect on the phenotype, intensifying the genes.
Explanation:
Polygenic traits (such as skin, hair and eye color) are those phenotypes that are <em>influenced by more than one gene</em>, meaning that the whole genetic information needed for these traits is located in multiple loci.
Aside from consisting of many alleles participating in the expression of some characteristics, polygenic inheritance differs greatly from the classical mendelian inheritance by also having <em>continuous variation</em> (which means that there aren't only two possible outcomes, but a whole spectrum) and a much more complex inheritance pattern.
Even when the genetic information for these traits plays an important role on the expression of these genes, the environment can be of great impact on these phenotypes (such as how the diet of an individual can affect greatly on a person's weight).
Polygenic traits are also of <em>variable expressivity</em> (people with the same genotype can express the characteristic with different intensities) and of <em>incomplete penetrance</em> (even when having the same genotype, some people may not actually develop the phenotype associated with it).
The alleles, however, don't always have an additive effect as they sometimes do the opposite job and suppress the alleles of other genes.
