Question

A pure breeding (true-breeding) variety means:

• A. Self-pollinating plant variety showing continuous variations
• B. Cross-pollinating genetically different plant variety showing inheritance of same traits every generation
• C. Cross-pollinating plant variety showing continuous variations
• D. Self-pollinating plant variety showing inheritance of same traits for several generations

Answer 1

The correct option is D Self-pollinating plant variety showing inheritance of same traits for several generations

Plants that undergo self-fertilisation for several generations, such that their traits under consideration remain unchanged are known as true-breeding or pure breeding plants. It is one that when self-pollinated, produces offspring with the same traits. True-breeding plants are genetically identical for the character(s) being investigated. Pure breeds do not show variations and transmit the same traits for several generations upon self-pollination. Cross-pollination will usually not produce pure breeds, and might provide chances for a new or suppressed trait to be expressed in the offspring.