I know that black coat color in mice is dominant to albino. Black mice get a higher price at the pet store so I am disappointed when I cross a black mouse with an albino mouse and get 6 albino and 2 black mice in the litter. I expected all black. What mistake did I make?

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#Question id: 4307

#Unit 3. Fundamental Processes

When taken up by a cell, which of the following molecules binds to a repressor so that the repressor no longer binds to the operator?

TLS Online TPP Program

#Question id: 18695

#Unit 13. Methods in Biology

Which of these restriction enzymes produce blunt ends?

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#Question id: 15652

#Unit 13. Methods in Biology

You are studying a new strain of E. coli that can utilize the disaccharide melibiose very efficiently. You find that utilization depends on the enzyme melibiase, which is encoded by the gene Mel1. Mel1 is not expressed unless melibiose is present in the growth medium. You have isolated a mutation that causes constitutive melibiase activity, which you designate MelA–. P1 phage mapping experiments using a Tn5 insertion linked to Mel1 show that MelA– is not linked to Mel1. Moreover you find that when an amber suppressor is introduced into a MelA– mutant, normal melibiase regulation is restored. Classify the MelA– mutation in terms of its basic genetic properties, 

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#Question id: 28953

#Unit 7. System Physiology – Animal

Somatostatin binds membrane receptor, which is coupled to the G-protein which is?

TLS Online TPP Program

#Question id: 12190

#Unit 2. Cellular Organization

CDK activity is modulated by the following proteins:

(a) cyclin, (b) CAK, (c) Wee1,  (d) p21. Following protein act as:

I. Inhibitory kinase

II. CKI Family of proteins

III. Activatory kinase

IV. Regulatory subunit

Which of the following is correct?