Questions

A tetrad is best described by Four chromatids. It is formed from two homologous chromosomes, each consisting of two chromatids in the first stage of meiosis called prophase1.

The primary function of State government is enforcing laws regarding the public safety.

The biggest concern is the cost incurred for test automation. Also, often s/w test automation requires skilled personnel and authentic test automation tools. Purchasing license of such tools is a costly affair.

Also the time required for test automation is more. Automation often requires recording the sequence of operations you need to perform in order to execute a particular test case and comparing the final o/p with the expected o/p. Functions/macros need also be written sometimes for some test cases. All this could be a time consuming job. 

India's first passenger train run took place from Mumbai to Thane for around 34 kms on 16th April in the year 1853. 

That train was hauled by three steam locomotives : Sahib, Sindh and Sultan.

That train had 14 carriages, carrying around 400 passengers.