NEET|AIIMS|Principles of inheritance and variation|class-12th|C-5|L-4
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NEET|AIIMS|Principles of inheritance and variation|class-12th|C-5|L-4


Back cross – when an individual is crossed with any of its parent . test cross – when an individual is crossed with recessive parent Phenotyp[e – term given by johansson . morphological expression of organism test cross Genotype – term given by johansson . Genetic constitution of an organism Phenocopy – if different genotype are placed in different enviroment condition then they produce same phenotype . then these genotype are said to be phenocopy of each other True breeding line :-A group of genetically identical homozygous individuals that, when intercrossed, produce only offspring that are identical to their parents true breeding line – It is the plant , undergone continuous and shows the stable trait inheritance and expression for several generations true breeding line – It is the plant , undergone continuous and shows the stable trait inheritance and expression for several generations Mutation – A heritable change in genetic makeup which is happen sudden . first time Hugo D Virse seen in evening primrose Hybride vigour/Heterosis – Superiority of offspring over its parent is called hybride vigor and it develops due to Heterozygosity Hybrid vigour can be lost by inbreeding (selfing) because inbreeding induces the Homozygosity in offspring . loss of Hybrid vigour due to inbreeding , is called as ” inbreeding depression ”

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