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TLS Online TPP Program

#Question id: 7228

Why do Drosophila wings develop in only one particular thoracic segment, legs in all three, and antennae on the head? Which of the following answer is correct?

#Unit 5. Developmental Biology
  1. The types of appendages produced by each segment reflect the identity conferred on that segment by the pattern of Hox gene expression along the antero-posterior axis in the embryo.
  2. The types of appendages produced by each segment reflect the identity conferred on that segment by the pattern of segment polarity gene expression along the antero-posterior axis in the embryo.
  3. The types of appendages produced by each segment reflect the identity conferred on that segment by the pattern of gap gene expression along the dorso-ventral axis in the embryo.
  4. The types of appendages produced by each segment reflect the identity conferred on that segment by the pattern of pair-rule gene expression along the dorso-ventral axis in the embryo.
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TLS Online TPP Program

#Question id: 14687

#Unit 13. Methods in Biology

Find the probability of drawing one rupee coin from a purse with two compartments one of which contains 3 fifty paisa coins and 2 one-rupee coins and the other contains 2 fifty paisa coins and 3 one rupee coins.
TLS Online TPP Program

#Question id: 14688

#Unit 13. Methods in Biology

If A and B are two events such that  = 1/ 2 then the events A and B are
TLS Online TPP Program

#Question id: 14689

#Unit 13. Methods in Biology

A determinant is chosen at random from the set of all determinants of order 2 with elements 0 or 1 only. The probability that value of the determinant chosen is
positive is
TLS Online TPP Program

#Question id: 14690

#Unit 13. Methods in Biology

One hundred identical coins each with probability p of showing up heads are tossed. If 0 < p < 1 and the probability of heads showing on 50 coins is equal to that of the heads showing in 51 coins, then the value of p is
TLS Online TPP Program

#Question id: 14691

#Unit 13. Methods in Biology

In a shooting competition, the probability of hitting the target by A is 2/5, by B is 2/3 and by C is 3/5. If all of them fire independently at the same target, calculate the probability that only one of them will hit the target.
TLS Online TPP Program

#Question id: 14692

#Unit 13. Methods in Biology

A box contains 6 white balls and 3 black balls and another box contains 4 white balls and 5 black balls. The probability that a ball selected from one of the box again selected at random is a white ball.