Scaffolds for MAP kinase pathways are well documented in yeast, fly, and worm cells, but their presence in mammalian cells has been difficult to demonstrate. Perhaps the best documented scaffold protein in metazoans is Ksr (kinase suppressor of Ras).

A. Ksr functions as a molecular scaffold by binding several signaling components of the MAP kinase cascade, including both MEK and MAP kinase; and thus can enhance MAP kinase activation by regulating the efficiency of these interactions.

B. Ksr function as a protein kinase which constitutive activate RTK signalling pathway.

C. Ksr function as a receptor proteins which inhibits RTK signalling pathway.

D. Ksr function as a protein phosphatase which inhibits RTK signalling pathway.

Which of the following statement is correct about Ksr?

#Question id: 3633

#Unit 8. Inheritance Biology

In a maternity ward, four babies become accidentally mixed up. The ABO types of the three babies are known to be A, B, and AB. The ABO types of the four sets of parents that are clamed are determined.

(A) AB X O  (B) A X O, (C) A X AB, (D) B  X O.

Following some statement is given

A. A blood group baby must be child of Parent B

B. B blood group baby must be child of Parent A

C. AB blood group baby must be child of Parent A

D. AB blood group baby must be child of Parent C

Which of the following above statement is correct?

#Question id: 3632

#Unit 8. Inheritance Biology

geneticist is working with a new bacteriophage called phage Y3 that infects E. coli. He has isolated eight mutant phages that fail to produce plaques when grown on E. coli strain K. To determine whether these mutations occur at the same functional gene, he simultaneously infects E. coli K cells with paired combinations of the mutants and looks to see whether plaques are formed. He obtains the following results. (A plussign means that plaques were formed on E. coli K; a minussign means that no plaques were formed on E. coli K.)

How many cistron belong to these mutation?

#Question id: 3631

#Unit 8. Inheritance Biology

Six different mutations 1 to 6, from the following results of functional allelism tests whereby the mutants were crossed with each other, determine location of mutant gene.

#Question id: 3509

#Unit 8. Inheritance Biology

Principle of independent assortment apply for those gene that is

#Question id: 3511

#Unit 8. Inheritance Biology

What proportional of one round and two wrinkle seed if random selected 3 seed from various seed produced from monohybrid test cross?

#Question id: 3512

#Unit 8. Inheritance Biology

How many different type of gamete produced by plant having genotype AABBccDd?