TLS Online TPP Program

#Question id: 7033


Fertilization can occur anywhere in the animal hemisphere of the amphibian egg. The point of sperm entry is important because it determines

#Unit 5. Developmental Biology
  1. Gastrulation site
  2. Expression of beta-catenin
  3. Dorsal-ventral polarity
  4. Cortical rotation
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TLS Online TPP Program

#Question id: 3808

#Unit 3. Fundamental Processes

Fibroblast cells from several different xeroderma pigmentosa patients were cultured, then fused in intergenic complementation studies. Which cell fusions would not result in a hybrid capable of repairing damaged DNA?

TLS Online TPP Program

#Question id: 3809

#Unit 3. Fundamental Processes

MMR is a highly conserved biological pathway. Several human MMR proteins have been identified based on their homology to E. coli MMR proteins. Match the following

Human

Function

1. MSH2-MSH6

A. DNA mismatch/damage recognition

2. MLH-PMS

B. Molecular matchmaker

3. MutH

C. Strand discrimination

D. Absent in Human


TLS Online TPP Program

#Question id: 3810

#Unit 3. Fundamental Processes

In the diagram below, the dotted line marks the point of initiation of bidirectional replication

A. On the right side of the dotted line, leading strand synthesis occurs using the lower strand as the template.

B. On the right side of the dotted line, leading strand synthesis occurs using the upper strand as the template.

C. A ligase deficient (lig- ) mutant would affect replication of t11e upper strand on the left side of the dotted line.

D. A ligase deficient (lig- ) mutant would affect replication of the lower strand on the left side

of the dotted line_

Which one of the following options represents the combinations of the CORRECT statements?

TLS Online TPP Program

#Question id: 3811

#Unit 3. Fundamental Processes

The mechanism of DNA replication is studied in an E. coli replication fork. Which is a characteristic of this replication fork?

TLS Online TPP Program

#Question id: 3812

#Unit 3. Fundamental Processes

The mechanism of DNA replication is studied in an E. coli replication fork. Which is a characteristic of this replication fork?

TLS Online TPP Program

#Question id: 3813

#Unit 3. Fundamental Processes

The mechanism of DNA replication is studied in an E. coli replication fork. Which is a property of Okazaki pieces in an E. coli replication fork?