Following statements are regarding to the some cancers harbor characteristic chromosome alterations. Chronic myelogenous leukemia (CML), a common leukemia in humans, was found to be associated with the Philadelphia chromosome.

A. Philadelphia chromosome is generated by a translocation between chromosomes 22 and 9. The two chromosomes exchange their terminal regions, which leads to a characteristic alteration in the size of chromosome 9.

B. At the breakpoint of this translocation, a new fusion protein, the BCR-ABL fusion, is generated.

C. The BCR-ABL fusion protein is a constitutively active kinase that phosphorylates multiple signal-transducing proteins.

D. If this translocation occurs in a hematopoietic cell in the bone marrow, the activity of the chimeric BCR-ABL oncogene dephosphorylate proteins thereby activating many intracellular signal-transducing proteins.

Which of the following statements are incorrect?

TLS Online TPP Program

#Question id: 18874

#Unit 9. Diversity of Life Forms

Plant spores are produced directly by  

TLS Online TPP Program

#Question id: 18873

#Unit 9. Diversity of Life Forms

Bryophytes have all of the following characteristics except 

TLS Online TPP Program

#Question id: 18872

#Unit 9. Diversity of Life Forms

Which of the following statements is true of archegonia? 

TLS Online TPP Program

#Question id: 18222

#Unit 9. Diversity of Life Forms

Which event during the evolution of land plants probably made the synthesis of secondary compounds most beneficial? 

TLS Online TPP Program

#Question id: 18221

#Unit 9. Diversity of Life Forms

In animal cells and in the meristem cells of land plants, the nuclear envelope disintegrates during mitosis. This disintegration does not occur in the cells of most protists and fungi. According to our current knowledge of plant evolution, which group of organisms should feature mitosis most similar to that of land plants? 

TLS Online TPP Program

#Question id: 18080

#Unit 9. Diversity of Life Forms

The following are all adaptations to life on land except