RRB NTPC GK Questions 2026

The fossil of Archaeopteryx carries feathers and wings like a bird together with teeth in the jaws, claws on the wings and a long tail with bones, all reptilian features, so it stands as the standard example of a connecting link in the fossil record.

The same arrangement of bones, humerus, radius and ulna, carpals, metacarpals and phalanges, is used for walking in a man, for swimming in a whale, for flight in a bat and for running in a cheetah, which indicates descent from a common ancestor and is called divergent evolution.

He held that an organ used often becomes stronger and one left unused withers, and that characters so acquired in a lifetime are passed to the offspring, the giraffe's lengthening neck being his best known illustration.

Darwin set out in that book the theory of evolution by natural selection, drawing on observations made during his voyage on HMS Beagle, among them the finches of the Galapagos islands whose beaks differ with their diet.

A person with Down syndrome carries three copies of chromosome 21 instead of two, a condition called trisomy 21, so the total chromosome number is 47 rather than 46.

A human body cell has 46 chromosomes arranged in 23 pairs, of which 22 pairs are autosomes, the chromosomes that are alike in both sexes, and the remaining pair is of sex chromosomes, XX in a female and XY in a male.

RNA carries adenine, guanine, cytosine and uracil, and the uracil occupies the place that thymine holds in DNA, pairing with adenine in the same way.

James Watson and Francis Crick published the double helix model in 1953, with two strands running in opposite directions and bases paired on the inside, using the X-ray diffraction photographs produced by Rosalind Franklin and Maurice Wilkins; Watson, Crick and Wilkins shared the Nobel Prize in 1962.

The correct answer is B, Wilhelm Johannsen, the Danish botanist who gave the words gene, genotype and phenotype, distinguishing the hereditary constitution of an organism from its visible expression.

In a dihybrid cross two pairs of characters are followed together, for example seed shape and seed colour, and the appearance of all four combinations in the proportion nine to three to three to one shows that the inheritance of one pair does not depend on the inheritance of the…

When two heterozygous plants of the first generation are crossed, three quarters of the offspring show the dominant character and one quarter the recessive one, because the recessive appears only when both factors in the pair are recessive.

Mendel chose it because it breeds true, is easy to cross by hand, completes a generation in a single season and offers seven pairs of sharply contrasting characters such as tall against dwarf stem and round against wrinkled seed.

Formed in 1955, it is the national body for amateur golf, runs the national amateur championships and selects Indian teams for amateur events such as the Asian Games and the Eisenhower Trophy.

A player may begin a round with no more than fourteen clubs and may not add to that number during play, except to replace a club damaged in the normal course of the round; carrying more brings a penalty.

Aditi Ashok won the Hero Women's Indian Open in 2016, becoming the first Indian woman to win on that tour, and she went on to represent India at the Olympic Games, finishing fourth at Tokyo.

Golf entered the Asian Games at the ninth edition, held in New Delhi in 1982, the Games whose mascot was the elephant Appu, and both individual and team events have been contested since.

Golf had been played at the Olympic Games of 1900 in Paris and 1904 in St Louis and then dropped out; it came back at Rio in 2016 as a 72-hole stroke play competition for men and for women, with sixty players in each field.

Founded in 1829, it is the oldest golf club in India and the oldest anywhere outside Great Britain, and it was given the title Royal in 1911.

The bird names rise with the achievement: one stroke under par on a hole is a birdie, two under is an eagle and three under is an albatross or double eagle.

Atwal won the Wyndham Championship in 2010 and so became the first golfer from India to win on the PGA Tour, the premier professional circuit of the United States.