Answer:
<h2><u>
directional selection</u></h2>
Explanation:
This type of natural selection is referred to as . In this type of natural selection, either one phenotype is preferred or the other; therefore, there is no equilibrium between the populations of the phenotypes that are present.
Examples of organisms that have undergone directional selection are black bears during the ice ages, African chichlid and sockey salmon.
Answer:
ATP production: reduced
Proton gradient: Dissipated
pH of the various mitochondrial compartments: pH of matrix will be reduced while that of the intermembrane space will be increased.
Explanation:
During oxidation of FADH2 and NADH, electrons are transferred through electron transport chain to the terminal electron acceptor, molecular oxygen. Electron transfer by the electrons carriers of electron transport chain is accompanied by the pumping of protons from matrix to the intermembrane space and generation of the proton concentration gradient. The proton concentration gradient drives ATP synthesis.
According to the given information, DNP shuttles protons from the intermembrane space into the matrix and thereby, lowers down the pH of the matrix making it more acidic with respect to intermembrane space. This would dissipate the proton concentration gradient and there will be reduced or no ATP production in the absence of the driving force.
<span>Factors that can increase mutation rates are high and low temperatures, food additives, and UV rays. All of these answers are correct. Mutation rates in genes vary depending on many environmental effects. UV rays, along with varying temperatures, can cause mutations during cell division due to the damage they impart on the cells that are dividing. Dangerous food additives are believed to cause mutations, as seen in animal studies (ie. aspartame causing cancer in rats).</span>
Answer:
Effects of Environment on Phenotype. Genes play an important part in influencing phenotype, but genes are not the only influence. Environmental conditions, such as temperature and availability of nutrients can affect phenotypes. For example, temperature affects coat color in Siamese cats
Explanation:
hope this helps
Prokaryotes and eukaryotes package their DNA molecules with protein in structures called chromosomes. A prokaryotic chromosome is circular and resides in a cell region called the nucleoid.
