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18 years ago, The sum of age of a family of four members = 45 × 4 = 180 years Now at present, The sum of age of four members = 180 + 18 × 4 =252 years Let the Present age of younger child be x years And the present age of older child = (x + 12) years Now, as per the question 252 + x + 12 + x = 45 × 6 2x = 270 – 264 2x = 6 x = 3 Hence the required ratio = (3+12) : 3 = 15: 3 = 5: 1
When one single gene starts affecting multiple traits of living organisms, this phenomenon is known as…………………..
...Mendel chose ………….. pairs of contrasting characters for his study. In all the above crosses he obtained a definite phenotypic ratio of ………...
Which of the following forms of nitrogen is most prone to leaching?
Pleiotropy is a phenomenon in which ____
Which one of the following is not the law as per genetics?
What type of epithelial tissue is present in the inner lining of the intestine and facilitates absorption and secretion?
Crossing over takes place in which stage of cell cycle?
Synthesis of RNA occurs in
Which of the following micro organism is used in genetic engineering?
Which of the following characters is not typical to class Mammalia?