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Molecular mechanism of a gene drive based on Cas9 and guide RNA. At the molecular level, an endonuclease gene drive works by cutting a chromosome at a specific site that does not encode the drive, inducing the cell to repair the damage by copying the drive sequence onto the damaged chromosome. The cell then has two copies of the drive sequence.
An 1807 grid plan of Manhattan. The history of New York City's transportation system began with the Dutch port of New Amsterdam.The port had maintained several roads; some were built atop former Lenape trails, others as "commuter" links to surrounding cities, and one was even paved by 1658 from orders of Petrus Stuyvesant, according to Burrow, et al. [1] The 19th century brought changes to the ...
New York City's dense population and low automobile dependence help make New York among the most energy efficient in the United States. [4] The city's greenhouse gas emission levels are relatively low when measured per capita, at 7.1 metric tons per person, below San Francisco , at 11.2 metric tons, and the national average, at 24.5. [ 2 ]
CHICAGO — After serving 20 years in state prison for murder, former gangbanger Tyrone Muhammad never expected to return to the city’s tough South Side and find Venezuelan migrants and the ...
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Key takeaways. Relocating to a less expensive part of the country when you retire can help your retirement money go further. But in today’s housing market, buying a home in a new location may ...
Too much gene flow may lead to genetic swamping through extensive hybridization. [2] Genetic rescue can occur through multiple pathways, including heterosis and adaptive evolution. [2] It is closely related to, but distinctly different from the concepts of genetic pollution, evolutionary rescue, genetic restoration, and assisted gene flow. [2]