Answer: D) All the above Explanation: Random mutations are the ultimate source of genetic variation. Mutations are likely to be rare and most mutations are neutral or deleterious, but in some instances, the new alleles can be favored by natural selection. Polyploidy is an example of chromosomal mutation.   Mutations are changes in the DNA. A single mutation can have a large effect. 1) mutation - an alteration in DNA sequence, various types 2) intragenic recombination - results in entirely new associations of genes not present in either parental genome. Two forms of intragenic recombination: a) crossing overb) independent assortment3) reticulation – acquisition of genetic material from unrelated or relatively unrelated sources (e.g., hybrid species, horizontal gene transfer).

Answer: C) China Explanation:

Answer: D) Aruna Budda Reddy Explanation: Aruna Budda Reddy has created history by becoming the first Indian to win an individual medal at the Gymnastics World Cup in Melbourne, Australia. She clinched a Bronze medal in the Women’s Vault.

Answer: A) 10 47/60 Explanation: The given equation is in Mixed fraction. Now to solve this type of fractions, 413 + 215 + 414 =?? = 4 + 2 + 4 + 13 + 15 + 14 ? = 10 + 4760? = 104760

Answer: D) 700 Explanation: Let number of boys = B Number of girls = G From the given data, 1B/3 + 1G/2 = 300 But given B/3 = 100 => B = 300 G/2 = 300 - 100 G = 200 x 2 => G = 400 Therefore, total number of students in the college = B + G = 700.

Answer: C) 3 Explanation: Number = quotient x divisor + remainder;so, herenumber = 138 k + 26=> (23 x 6k) + (23+3)=> 23(6k+1)+3so, remainder is 3.

Here I give you the first 30 Atomic elements names and their Atomic masses.   Atomic number      Element        Atomic mass                                      1                 Hydrogen           1         2                  Helium              4         3                 Lithium              6.94         4                Beryllium            9.01         5                  Boron               10.81         6                Carbon               12.01         7                Nitrogen             14.01         8                Oxygen              15.99         9                Fluorine              19.00        10                Neon                 20.18        11               Sodium               22.99        12             Magnesium           25.31        13             Aluminium            26.98        14               Silicon                28.09        15             Phosphorus           30.97        16               Sulphur               32.07        17               Chlorine              35.45        18                Argon                 39.95        19             Potassium              39.10        20              Calcium                40.08        21             Scandium              44.96        22             Titanium               47.87        23            Vanadium              50.94        24             Chromium            24. 52        25            Manganese            54.94        26                Iron                  55.85        27              Cobalt                 58.93        28               Nickel                 58.69        29              Copper                 63.55        30                Zinc                   65.41

Answer: B) Oxford Explanation: In the annual World University Rankings released by Times Higher Education, the Indian Institute of Science of India has reached 251-300 band from last year's 201-250 band, while Oxford and Cambridge universities are on the top in the Global 1000 list.