TLS Online TPP Program

#Question id: 18697


Knockout mice are created by

#Unit 13. Methods in Biology
  1. mutagenizing a mouse and selecting for mutant offspring
  2. creating a chimera by fusing cells from two different cell lines
  3. infecting the mouse with a retrovirus
  4. transfecting embryonic stem cells with an altered gene sequence
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TLS Online TPP Program

#Question id: 7149

#Unit 5. Developmental Biology

What role, if any, do Hox genes play in specification of neuronal fate?

TLS Online TPP Program

#Question id: 4757

#Unit 8. Inheritance Biology

The newborn baby of a mother having blood group O, Rh+ and father having blood group AB, Rh-, got mixed with other babies in the hospital. The baby with which of the following blood groups is not confirmable to be of the said couple?

(i) AB, Rh+                                                    (ii) O, Rh+

(iii) A, Rh+                                         (iv)  B, Rh+

TLS Online TPP Program

#Question id: 3381

#Unit 11. Evolution and Behavior

A source population with allelic frequency of p and q is .90 and .10 respectively. Recipient population with 900 individuals having allelic frequency of p and q is .30 and .70 respectively. If 100 migratory individual is inter from source to recipient population. After migration what is allelic frequency of p in their recipient population?

TLS Online TPP Program

#Question id: 33361

#Unit 1. Molecules and their Interaction Relevant to Biology

a. Hb Cowtown: eliminates an ion pair involved in T-state stabilization
b. Hb Milwaukee: substitutes a Glu for a Val
c. Hb Providence: substitutes an Asn for a Lys that normally projects into the central cavity of the tetramer
d. Hb Philly: substitutes a Phe for a Tyr,

Which Hb variant will not bind to BPG

TLS Online TPP Program

#Question id: 313

#Unit 1. Molecules and their Interaction Relevant to Biology

What is the difference between a particle being hydrated versus being solvated?