What is the genomic constitution of old world | vedclass

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(D) The old world cotton species,$Gossypium \, arboreum$ and $G. herbaceum$,are diploid species with a chromosome number of $2n = 26$.These are often

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Old world $2n$ and new world $4n$

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(D) The old world cotton species,$Gossypium \, arboreum$ and $G. herbaceum$,are diploid species with a chromosome number of $2n = 26$.These are often referred to as $A$-genome diploids.In contrast,the new world cotton species,$Gossypium \, hirsutum$ and $G. barbadense$,are allotetraploid species with a chromosome number of $2n = 4x = 52$.Therefore,the correct genomic constitution is old world $2n$ and new world $4n$.

What is the genomic constitution of old world varieties of cotton $(Gossypium \, arboreum, G. herbaceum)$ and new world varieties $(G. hirsutum, G. barbadense)$?

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