In stimulated emission depletion (STED) microscopy the focused excitation laser point is surrounded by a 

TLS Online TPP Program

#Question id: 5740

#SCPH28 | Zoology

Pollen from one species germinates on the stigma of another related species and sexually fertilizes the ovule. Most of the resulting plants are sterile but some of the resulting offspring undergo chromosome duplication resulting fertile plants. The fertile offspring are known as

TLS Online TPP Program

#Question id: 5741

#SCPH06 I Botany

In a mammal 2 Barr bodies are observed.  How many X chromosomes does the organism have?

TLS Online TPP Program

#Question id: 5741

#SCPH28 | Zoology

In a mammal 2 Barr bodies are observed.  How many X chromosomes does the organism have?

TLS Online TPP Program

#Question id: 5742

#SCPH06 I Botany

When an allotetraploid (AABB) is backcrossed to one of its progenitor species (AA), a sterile progeny is produced.  The genomic composition of this sterile individual can be best represented by

TLS Online TPP Program

#Question id: 5742

#SCPH28 | Zoology

When an allotetraploid (AABB) is backcrossed to one of its progenitor species (AA), a sterile progeny is produced.  The genomic composition of this sterile individual can be best represented by

TLS Online TPP Program

#Question id: 5743

#SCPH06 I Botany

Euploidy is