A tobacco plant heterozygous for albinism (a recessive character) is self-pollinated and 1200 seeds are subsequently germinated. How many seedlings would have the parental phenotype?

900

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600

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1200

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300

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Solution

The correct option is B 600

A tobacco plant, heterozygous for albinism(a recessive character) is self pollinate, 1200 seeds are obtained in next in the generation. In this 300 are homozygous plant without albinism 600 heterozygous plants with albinism and without albinism and 300 plants are homozygous for albinism.
The phenotype of the parents is with albinism(recessive) and without albinism(dominant).So the correct option is ‘600’.

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