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back crosswhen f1 individual tt is crossed with one of the two parents either tall tt or dwarf tt such a cross is called the back cross there
importance of mendelism1 improvement of plantshybridization is used for obtaining improved varieties of plants this process
reasons for mendels success1 mendel selected only pure breeding varieties of pea pisum sativum for his
conclusions drawn from the monohybrid crossesfrom the results of his monohybrid crosses following conclusions were obtained -1
results of monohybrid crossesmendel got the following results from his monohybrid crosses -1 f1 plants produced by
reciprocal crossessimilar results were obtained with reciprocal crosses also a reciprocal crosses involves the same traits but carried by sexes
checker board punnets square method1 if the genotypes of the parents are known the genotypes of their offspring can
mendels experimental plantmendel selected common garden pea pisum sativum for his experiments because-i the pea is
genetic terminologyi gene - mendel used the term factor for a gene a gene is the unit of dna responsible for the
rediscovery of mendels laws the birth of genetics1 it was in 1900 that three botanist independently rediscovered the
theory of germplasmi august weismann 1889 suggested the theory of continuity of
pangenesis theoryi charles darwin propounded pangenesis theoryii according to this
particulate theoryi maupertuis 1689-1759 proposed that the body of each parent give rise to minute
theory of epigenesisi it was proposed by cf wolff amp supported by von baerii wolff proposed
preformation theory 1632-1723i scientist malpighi swammerdam propounded the preformation theory this theory holds
vapour theoryi it was proposed by a greek philosopher pythagoras in 500 bcii each
heredity1 like begets like ie every living organism reproduces its own kind frog reproduce frogs rats reproduce rats
genetics1 the branch genetics started in 1900 after rediscovery of mendels work2
the mass number is used to calculate the number of in one atom of an elemement in order to calculate the number of neutrons you must subtract the
vitamin - kalso known as naptho quionone anti haemorrhagic vitamin coagulation vitamin menadoneit requires for formation of blood clotting factor
vitamin - ealso known as beauty vitamin tocopherol antisterlity vitaminantioxidant because it inhibits peroxide formationit stops undesired
vitamin - calso known as ascorbic acid anti viral vitamin anti cancer vitamin anti rabies vitamin anti scurvy vitaminit is the earliest known
cholinefound in egg liver amp kidneysynthesized in body with acetyle coait forms acetylcholinedeficiency causes damage to
vitamin - dalso known as calciferol anti ricket vitamin sun shine vitaminit is necessary for bones amp teethit is synthesized in presence of uv
vitamin - adiscovered by macollumalso known as retinol antixeropthalmic vitamin auxerophtholit is vitamin for normal vision it forms retinal