The glands present in the skin of frog are

From the following statements,select the wrong one:

The reaction sequence given below is carried out with $16$ moles of $X$. The yield of the major product in each step is given below the product in parentheses. The amount $($in grams$)$ of $S$ produced is $.....$
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Use: Atomic mass $($in amu$): H =1, C =12, O =16, Br =80$

In transgenics,the expression of a transgene in the target tissue is determined by:

The solution of $\frac{dy}{dx} = \frac{y^2}{xy - x^2}$ is