Albinism in plants is the inability to make chlorophyll. It is a recessive trait

Question

Albinism in plants is the inability to make chlorophyll. It is a recessive trait. In an experiment, heterozygous tobacco plants undergo auto-fertilization and produce 600 seeds, of which 80% germinate. a) How manyalbino plants will be obtained? b) How many plants will show the parental genotype? Albinism in plants is the inability to make chlorophyll. It is a recessive trait. In an experiment, heterozygous tobacco plants undergo auto-fertilization and produce 600 seeds, of which 80% germinate. a) How manyalbino plants will be obtained? b) How many plants will show the parental genotype? Albinism in plants is the inability to make chlorophyll. It is a recessive trait. In an experiment, heterozygous tobacco plants undergo auto-fertilization and produce 600 seeds, of which 80% germinate. a) How manyalbino plants will be obtained? b) How many plants will show the parental genotype?

Explanation / Answer

Answer. A) after going autosomal fertilization of heterozygous tobacco plants, produces out of 600 seed 80% seed germinate that means

(80/100)*600 = 480 seeds germinate. Let us take genotype GG as homozygous green tobacco plants. Gg as heterozygous green tobacco plant and gg as albino tobacco plants.

So by fertilization of heterozygous green tobacco plant. We obtain 3 (green tobacco plants) : 1 ( albino tobacco plant). So albino plant we get are (1/4)*480 = 120 albino plants and rest of it (360) tobacco plants are green.

Answer B) parental genotype is Gg. As we get three genotype after fertilization of heterozygous tobacco plants i.e GG (1) : Gg (2) : 1( gg). So the no plant show parental genotype are

(2/4)* 480= 240 plants show heterozygous tobacco plants genotype similar to parental genotype.

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