dr biology

The technique of finger printing was perfected by British genetist Dr. Alec Jeffreys in 198..

P.R. Stout and Dr. Hoagland have proved that mineral nutrients absorbed by the roots are translocated through the xylem vessel. Mineral salts dissolved in water moves up along the xylem vessel to be transported to all the parts of the plant body. Translocation is aided, by transpiration. ..

The technique of finger printing was perfected by British genetist Dr. Alec Jeffreys in 1984. fig. 25.9 Identical Twins No two people (other than identical twins) have exactly the same sequence of bases in their DNA. By detecting these, the differences in DNA sequences, it is possible to ..

) Antibodies consist of heavy and light chains and variable and constant portions. 11) Acquired immunity is of 2 types namely Active and passive immunity. 12) Cellular immunity refers to destruction of antigens by T-cells and humoral immunity refers to destruction of antigens by antibodies 13) T-ce..

Dr. Bill is 28 years old and his son is 8 years old. What fraction of Dr. Bill's age is his son's age? => 8 31 or 4 15 or 2 7 or None of the above..

Dr. Sam wanted not less than 8 surgical lights in the surgery room. Which of the following inequalities best describes the situation when lights are represented by l ? => l < 8 or l ≥ 8 or l > 8 or l ≤ 8..

Evaluate: ∫ - 1 2 r 3.3 dr => - 1.33 x 2.3 + c or - r 3 . 4 3 . 3 + c or - 1 2 r 4.3 + c or - 5 43 r 4.3 + c or - 3.3 r 4.3 + c..

Find the value of ∫ (7 r 7 - 8 r ) 2 dr . => ( 7 r 8 8 - 4 r 2 ) 2 + C or 112 9 r 1 5 - 6 4 3 r 3 + C or 4 9 1 5 r 1 5 - 112 9 r 9 + 6 4 3 r 3 + C or 686 r 15 - 112 r 8 + ..

A series of the form a + (a + d)r + (a + 2d)r 2 + ... is called an Arithmetic-Geometric series. In the series if we put d = 0 we get GP and if we put r = 1, we get an A..

In 1798, Count Rumford observed that the amount of heat produced is proportional to the amount of mechanical work done. Later, Dr. James Prescott Joule of Manchester, established a definite relation between the work done and the heat produced. It was shown that when a certain amoun..