In garden peas, the allele for tall plants (D) is completely dominant to the allele for dwarf plants (d) and the allele for violet flower color (W) is completely dominant to the allele for white flower color (w). In a cross between a tall violet plant, with the genotype DDWw, and a dwarf white plant, what phenotypic ratio of the progeny would be expected from this cross?

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#Question id: 20984

#SCPH01 Biochemistry

Benzene being the most recalcitrant was earlier believed to be 

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#Question id: 5846

#SCPH06 I Botany

The bacteriophage can lysogenize after infecting a bacterium, i.e. integrate into the host bacterial chromosome by site-specific recombination, and may reside there for many generations before an excision event regenerates the viral genome in an infective form.  Which one of the following is not a component of these events?

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#Question id: 16498

#SCPH06 I Botany

Chromosomal gene of agrobacterium needed for an optimal expression of vir genes of pTi

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#Question id: 7038

#SCPH01 Biochemistry

During sea urchin development, micromeres retain their specification is to secrete an autocrine factor:

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#Question id: 18073

#SCPH06 I Botany

During which geological period was there an first definite evidence of land plants and algae dominant of many plants?