The mechanism that affected the gene pool of the immigrants that entered the United States through Ellis Island from 1892 to 1954 is B. gene flow. Gene flow is the transfer of genes or alleles from one population to another. The migration of millions of individuals from countries across the Atlantic Ocean to the United States is responsible for the changes in the gene pool of the immigrants.
Answer:It will by the growth of them
Explanation:
The phenomena of polygenic inheritance would have become a grievous fault to his investigation, if he had investigated human height instead of stem length of pea plants.
Explanation:
The polygenic or polygenetic inheritance is the inheritance where the trait of a particular allele is passed on to the next generation with many genes involved in order to show the genotype and phenotype of the allele present on the same chromosome.
The stem length or plant height depends on the single factor of allelic gene inheritance and expression in phenotype, making it simpler to trace down the division of meiosis and control the experiment as needed. Considering human height for a chance, may lead to uncontrolled condition of having next generation study as well as the time required to be long. Other factor was that the height is dependent not only on the height gene expression but is controlled by nutrition and environmental factors too.
Answer:
b. Mutualistic
Explanation:
The symbiotic relationships are defined by the interacition between two species, In the mutualistic symbiotic relationship both of the organisms get benefits from the interaction. in the case of the normal flora in the skin as they compete with pathogens for space and food they prevent this patogens to go in the human skin, and they get food from the skin, so as they give protecttion and obtain food, both of the organisms are getting benefits and because of this:
The relationship between you and your normal flora is an example of a mutualistic symbiotic relationship.
Cells free Protein expression is described below.
Explanation:
- laboratories came to adopt the technique for protein synthesis for the purposes of answering the age-old question: exactly what role do amino acids play in proteins? Scientists Marshall Nirenberg and Heinrich Matthaei made a huge breakthrough in the answer to this fundamental question in 1961, successfully applying cell-free protein expression to make the connection between nucleotide triplets and the amino acids they encode.
- Using an in vitro translation system based on E. coli, they were able to synthesize the polypeptide polyphenylalanine. From there, they were able to determine the connection between the amino acid phenylalanine and its corresponding codon UUU, essentially discovering the key to cracking the genetic code. This groundbreaking experiment would eventually lead to the deciphering of all the remaining amino acid codons and laid the foundation for the wide variety of translation biology systems that are available today
- Cell-free expression begins with crude extracts generated from cultured cells that are typically engaged in a high rate of protein synthesis, such as immature red blood cells (reticulocytes). These crude extracts are depleted of their endogenous DNA and mRNA, and the cell lysate is subsequently supplemented with macromolecular components required to perform translation, including ribosomes, tRNAs, aminoacyl-tRNA synthetases and initiation, elongation and termination factors.
