Males of different species of the fruit fly Drosophila that live in the same parts of the Hawaiian Islands have different elaborate courtship rituals. These rituals involve fighting other males and making stylized movements that attract females. What type of reproductive isolation does this represent?

TLS Online TPP Program

#Question id: 14726

#Section 1: Engineering Mathematics

For two events A and B  

(i) not less than P(A) + P(B) -1

(ii)not greater than P(A) + P(B)

TLS Online TPP Program

#Question id: 14727

#Section 1: Engineering Mathematics

Two persons A and B have respectively n + 1 and n coins, which they toss simultaneously. Then the probability that A will have more heads than B is

TLS Online TPP Program

#Question id: 14728

#Section 1: Engineering Mathematics

A student appears for tests I, II and III. The student is successful if he passes either in tests I and II or tests I and III. The probabilities of the student passing in tests I, II and III are p, q and 1/2 respectively. If the probability that the student is successful is 1/2. Then

TLS Online TPP Program

#Question id: 14729

#Section 1: Engineering Mathematics

The figure below shows the network connecting cities A, B, C, D, E and F. The arrows indicate permissible directions of travel. If Deepak from city A wants to visit city F, what is the probability he will pass through city C

TLS Online TPP Program

#Question id: 14730

#Section 1: Engineering Mathematics

Mean of 200 observations was found to be 90. However, when the observations were being made, two observations were wrongly taken as 15 and 80 instead of 40 and 87. Then the correct mean is

TLS Online TPP Program

#Question id: 14733

#Section 2: General Biology

Staphylococci are coccus bacteria which usually occur in clusters. What is the benefit of being in cluster