Two independent pure line varieties having deep red and brown phenotype in their seed coat were cross, the all f1 progeny is deep red. The F2 progeny obtain from selfing show deep red and brown in ratio of 15:1. Which of the following observation is correct?

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#Question id: 7504

#Part-A Aptitude & General Biotechnology

Two train 100 metres and 120 metres long are running in the same direction with speed of 72 km/hr and 54 km/hr. In how much time will the first train cross the second?

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#Question id: 7505

#Part-A Aptitude & General Biotechnology

A train running at 54 kmph takes 20 seconds to pass a platform .Next it takes 12 seconds to Pass a man walking at 6 kmph in the same direction in which the train is going. Find the length of the train and the length of the platform.

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#Question id: 7506

#Part-A Aptitude & General Biotechnology

A man sitting in a train which is travelling at 50 kmph observes that a goods train,travelling In opposite direction,takes 9 seconds to paas him. If the goods train is 280 m long,Find its speed.

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#Question id: 7507

#Part-A Aptitude & General Biotechnology

The lengths of trains A and B are 250 m 300 m respectively and their speeds are 70 km/h and 79 km/h respectively. They are walking in the same direction. In how much time will train B cross a passenger sitting in A?

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#Question id: 7508

#Part-A Aptitude & General Biotechnology

A boat running downstream covers a distance of 12 km in 2 h while for covering the same distance upstream it takes 3 h. What is the speed of the boat in still water?

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#Question id: 7509

#Part-A Aptitude & General Biotechnology

A boatman goes 3 km against the current of the stream in 1 h and goes 1 km along the current in 15 min. How long will it take to go 7 km in stationary water?