Practice Questions

TLS Online TPP Program

#Question id: 5214

What is the most probable explanation for the continued presence of pseudogenes in a genome such as our own?

#SCPH06 I Botany

They are genes that had a function at one time, but that have lost their function because they have been translocated to a new location.
They are genes that have accumulated mutations to such a degree that they would code for different functional products if activated.
They are duplicates or near duplicates of functional genes but cannot function because they would provide inappropriate dosage of protein products.
They are genes that are not expressed, even though they have nearly identical sequences to expressed genes.

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TLS Online TPP Program

#Question id: 15142

#SCPH05 I Biotechnology

Dot matrix analysis of the amino acid sequences of lambda phage cI (horizontal sequence) and phage P22 c2 (vertical sequence) repressors is shown below. Which one of the following is correct?

TLS Online TPP Program

#Question id: 15143

#SCPH01 Biochemistry

Which one of the following is a depiction of the GenBank sequence entry format?

TLS Online TPP Program

#Question id: 15143

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

Which one of the following is a depiction of the GenBank sequence entry format?

TLS Online TPP Program

#Question id: 15143

#SCPH05 I Biotechnology

Which one of the following is a depiction of the GenBank sequence entry format?

TLS Online TPP Program

#Question id: 15143

#SCPH05 I Biotechnology

Which one of the following is a depiction of the GenBank sequence entry format?

TLS Online TPP Program

#Question id: 15146

#SCPH01 Biochemistry

You have isolated a set of five yeast mutants that form dark red colonies instead of the usual white colonies of wild-type yeast. You cross each of the mutants to a wild-type haploid strain and obtain the results shown below;

What do these results tell you about each of the mutants?