15000+ GATE Life Sciences practice questions with 1-minute explanatory videos.

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TLS Online TPP Program

#Question id: 4926

#XL - R Botany

Shell coiling in snail is determined by genetic maternal effect for a single loci having D allele for dextral coiling but S allele for sinistral coiling. D dominant over S. which of the following cross would produced all progeny that is dextral coiling ?

I- DD Male X SS female

II- DD Male X DS female

III- SS Male X DD female

IV - DS Male X DS female

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TLS Online TPP Program

#Question id: 12671

#XL - R Botany

When genetic changes in an entire plant population have been fixed over many generations by selective environmental pressure, those changes are referred to as,

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TLS Online TPP Program

#Question id: 12670

#XL - R Botany

 Changement  in the physiology or morphology of the individual is a nonpermanent  or  temporary and that can be reversed if the prevailing environmental conditions change is termed as 

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