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Zoology

Blazing goIITian

Joined:	3 Sep 2008
Post:	485

29 Jan 2009 20:51:54 IST

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In a garden pea, a tall plant is crossed with a dwarf plant.Tall and dwarf plants were pr

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In a garden pea, a tall plant is crossed with a dwarf plant.Tall and dwarf plants were produced in the ratio of 1:1.therefore the genotype of the parent tall plant is

both 1 n 2 xplain

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AIR 538 Asish

Blazing goIITian

Joined: 29 Nov 2008

Posts: 1137

29 Jan 2009 21:12:32 IST

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It can only be Tt.For TT the crosses would be Tt, Tt. resulting in all tall plants.For Tt, the crosses would be Tt, tt which would be in the ratio 1:1Genotype of tall plant can never be tt as T is dominant over t hence tall is dominant over t.Rate if useful

N.P. Singh

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Joined: 17 Dec 2008

Posts: 446

30 Jan 2009 17:51:41 IST

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ANS is Tt bcoz the chances 50: 50 is always in case of heterozygous parents according to test cross

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