<span>An alliance is an association between individuals, groups, or federations that have combined together for joint benefit or to attain some shared determination, whether or not clear contract has been worked out between them. Members of this group are called allies. </span>
Answer: Mutation
Explanation: Mutation is a term in biology that occures when nucleotide sequence changes in DNA that are permanently retained and transmitted to progeny cells. Mutations happen in every cells and organisms like spontaneous mutations and induced mutations.
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Sites within the human genome where a short nucleotide sequence is repeated many times in a row are known as short tandem repeats.
DNA sequences with 2 to 6 base pairs are known as short tandem repeats (STRs), and they are dispersed throughout the genome. Multiple repetitions of these brief sequences are possible, and the number of repetitions varies greatly between people. The capacity to distinguish one sample from another is made possible by the great variability.
The Y-STR method's primary benefit is its capacity to identify the male component even in severe male-to-female DNA mixes. The number of semen donors for combinations of two or more male persons can be determined using it, as well as for quickly screening a large number of stains.
Due to their occasionally poor biostatistical efficiency and the potential to detect one or more genetic discrepancies that might potentially be explained by mutational events, STRs have a few drawbacks when examining genetic links in deficient cases.
To know more about short tandem repeats refer to: brainly.com/question/15016218
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Fort Sumter is an island fortification located in Charleston Harbor, South Carolina most famous for being the site of the first shots of the Civil War (1861-65). Originally constructed in 1829 as a coastal garrison, U.S. Major Robert Anderson occupied the unfinished fort in December 1860 following South Carolina’s secession from the Union, initiating a standoff with the state’s militia forces. When President Abraham Lincoln announced plans to resupply the fort, Confederate General P.G.T. Beauregard bombarded Fort Sumter on April 12, 1861, kicking off the Battle of Fort Sumter. After a 34-hour exchange of artillery fire, Anderson and 86 soldiers surrendered the fort on April 13. Confederate troops then occupied Fort Sumter for nearly four years, resisting several bombardments by Union forces before abandoning the garrison prior to William T. Sherman’s capture of Charleston in February 1865. After the Civil War, Fort Sumter was restored by the U.S. military and manned during the Spanish-American War (1898), World War I (1914-18), and World War II (1939-45). It’s now a National Historic Site.
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