Question

Scientists have discovered how to put together a bacteriophage w ith the protein coat of phage A and the DNA of phage B. If this composite phage were allowed to infect a bacterium, the phages produced in the cell would have a. the protein of A and the DNA of B. b. the protein of B and the DNA of A. c. the protein and DNA of A. d. the protein and DNA of B.

Name: Problem 9, Chapter 10: Campbell Essential Biology with Physiology
Uploaded: 2020-05-21T05:14:19-08:00
Duration: 2 min
Channel: Andrei Demkov
Description: Scientists have discovered how to put together a bacteriophage w ith the protein coat of phage A and the DNA of phage B. If this composite phage were allowed to infect a bacterium, the phages produced in the cell would have a. the protein of A and the DNA of B. b. the protein of B and the DNA of A. c. the protein and DNA of A. d. the protein and DNA of B.

   Scientists have discovered how to put together a bacteriophage w ith the protein coat of phage A and the DNA of phage B. If this composite phage were allowed to infect a bacterium, the phages produced in the cell would have
a. the protein of A and the DNA of B.
b. the protein of B and the DNA of A.
c. the protein and DNA of A.
d. the protein and DNA of B.

Campbell Essential Biology with Physiology

Eric J. Simon, Jean… 6th Edition

Chapter 10, Problem 9

Instant Answer

Solved by Expert Andrei Demkov

05/21/2020

Step 1

This phage C has the protein coat of phage A (which we will represent as white) and the DNA of phage B (which we will represent as orange). Show more…

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Scientists have discovered how to put together a bacteriophage w ith the protein coat of phage A and the DNA of phage B. If this composite phage were allowed to infect a bacterium, the phages produced in the cell would have a. the protein of A and the DNA of B. b. the protein of B and the DNA of A. c. the protein and DNA of A. d. the protein and DNA of B.

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Key Concepts

Phenotypic Mixing

This is the phenomenon in viruses where the structural proteins (such as the protein coat) from one viral strain are combined with the genomic material of another strain during assembly. This results in a composite virus particle that displays physical characteristics (phenotype) that do not match its genetic information (genotype), though only temporarily.

Viral Genome Determination

The genetic material of a virus contains all the instructions necessary for replication and the production of new viral proteins. When a composite virus infects a host cell, it is the genome that directs the synthesis of viral components, meaning that progeny viruses will display characteristics (such as their protein coats) that are determined by their own genome rather than by the proteins present in the infecting virus particle.

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