Cross is made between a pure breeding plant having red coloured male flowers with a pure breeding plant having white colored female flowers. All of these offspring are white colored flower. Upon selfing of these F1 red flower plant produced both red and white flower. Which of the following is conclusion of these cross?

#Question id: 2265

#SCPH01 Biochemistry

Passage through pores in the nuclear envelope is restricted primarily to

#Question id: 8289

#SCPH28 | Zoology

The term convergent evolution is most applicable to which of the following features?

#Question id: 19519

#SCPH05 I Biotechnology

#Question id: 6951

#SCPH01 Biochemistry

In chick development, the cell movement during gastrulation is called:

#Question id: 8296

#SCPH28 | Zoology

Giardia intestinalis can cause disease in several different mammalian species, including humans. Giardia organisms (G. intestinalis) that infect humans are similar morphologically to those that infect other mammals, thus they have been considered a single species. However, G. intestinalis has been divided into different subgroups based on their host and a few other characteristics. In 1999, a DNA sequence comparison study tested the hypothesis that these subgroups actually constitute different species. The following phylogenetic tree was constructed from the sequence comparison of rRNA from several subgroups of G. intestinalis and a few other morphologically distinct species of Giardia. The researchers concluded that the subgroups of Giardia are sufficiently different from one another genetically that they could be considered different species.

According to the phylogenetic tree in the figure above, G. intestinalis constitutes a ________ group.