Dna was first used in the courtroom for identification. before the 1800s during the 1800s 1900-1988 1990-present

The correct answer is: Geneticist Alec Jeffreys first developed a protocol for DNA testing in the mid-1980s and DNA testing was first used in a British case where two teenagers were raped in 1986.

the answer is: must pay taxes on profits

since it is considered as a part of your income, profits from investments is eligible for tax payment.

the tax from your investment could be influenced by how long you decided to sell it. united states promotes keeping your investment for long term period. so, the tax rate for investments that you sell in less than one year is typically higher compared to investments that you sell in more than one year period.