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Assertion : Hybrids are generally back crossed. Back cross is done to increases the trains of the parnnts.A. If both the assertion and the reason are true and the reasons is a correct explanation of the assertionB. If both the assertion and reason are true but the reason is not a correct explanation of the assertionC. If the assertion is true but the reson is falseD. If both the assertion and reason are false |
Answer» Correct Answer - A Back cross is a cross which is performed between hybrid and one of its parent . In plant breeding back cross is performed a few times in order to increase the traits of that parent. For example a crop plant is crossed with a wild variety in order to obtain its disease resistance. In the process most good traits or the crop plant get diluted. the hybrid is , therefore repeatedly crossed with parent crop plant in order to transfer the good traits back into it. |
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