They are all mechanisms of <u>Evolution </u>and can change allele frequencies in populations
Natural selection, mutation, genetic drift and gene flow are all capable of causing varying changes in allele frequencies in a population. and these changes leads to the violation of Hardy-Weinberg assumptions
Hardy-Weinberg assumption states that; for a population to experience an unchanged allele frequencies, certain conditions must be met by the population such as ; absence of natural, random mating , absence of migration and absence of mutation.
Hence we can conclude that Natural selection , mutation, genetic drift and gene flow are all mechanisms of <u>Evolution </u>and can change allele frequencies in populations
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<span>The answer is A because it is true that these three stages consist the aerobic respiration.</span>
Answer:
Explanation:
Protein molecules binding to DNA initiate sequences of biochemical transitions that control and regulate all major process in the living cells
These protein molecules strongly bond to special sequences of DNA known as specific binding sites
Theoretically , there are two main components of binding forces
- One of them is purely electrostatic attraction between oppositely charged DNA and protein molecules that are mostly sequence independent
- Other one comes from particular DNA sequence that strengthens the attraction of protein molecules
The origin of this increased affinity is due to combination of van der waals , hydrogen , covalent and steric interactions as well as electrostatic charge patterns recognition
Some studies has suggested that there is an additional statistical interaction potential between protein and DNA molecules. Source of this interaction is due to the specific structure and symmetry of DNA sequences to which protein molecule binds
DNA sequences with repeated homogeneous segments (A:T or G:C) have stronger affinity for association to DNA binding proteins as compared to heterogeneous sequences
3 types of interactions takes place on encounter of protein and DNA molecule which are van der waals forces , hydrogen bonds between complimentary organic bases (base pairs) and hydrophobic interactions between the nitrogenous bases and the surrounding sheath of water
Of all these forces van der waals forces are strongest and hydrophobic interaction between the nitrogenous bases and surrounding sheath of water is the weakest
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C. phenotype. Phenotype is the physical appearance. I use PH and PH to help me remember.
Answer:
Diffusion- Passive transport
energy required- Active transport
exocytosis- Active transport
osmosis- Passive transport
endocytosis- Active transport
energy not required- Passive transport
facilitated diffusion- Passive transport
Protein pumps- Active transport
Explanation:
Passive transport can be described as the transport of particles along the concentration gradient i.e from an area of higher concentration to an area of lower concentration. This process does not require energy. For example, the phenomenon of osmosis
Active transport can be described as the transport of particles against the concentration gradient i.e from an area of lower concentration to an area of higher concentration. This process requires energy. For example, exocytosis
