Practice Questions

TLS Online TPP Program

#Question id: 15010

The phenomenon where half the "normal" level of functional protein is not enough to generate a normal phenotype is called haploinsufficiency. Which of the following situations demonstrates haploinsufficiency?

#SCPH01 Biochemistry

Persons with type AB blood display both A and B antigens on their red blood cells.
Heterozygous and homozygous flowers are both purple in case of incomplete dominance.
"Small eye" in mice is caused by loss of one copy of the pax6 gene
A mutation in a protein causes it to become much more active than usual.

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TLS Online TPP Program

#Question id: 4341

#SCPH01 Biochemistry

Suppose an experimenter becomes proficient with a technique that allows her to move DNA sequences within a prokaryotic genome. If a researcher moves the promoter for the lac operon to the region between the beta galactosidase (lacZ) gene and the permease (lacY) gene, which of the following results would be most likely?

TLS Online TPP Program

#Question id: 18381

#SCPH06 I Botany

Which bacterial strain was improved by scientists to be able to degrade 2,4-dinitrotoluene and promote plant growth

TLS Online TPP Program

#Question id: 16314

#I Life Science/ Life Sciences Group – I-V

What is Stress response?

TLS Online TPP Program

#Question id: 28020

#Research Methodology

Which of the following is the first step in starting the research process?