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In an experiment discussed in class, Francis Crick isolated revertants of the mutation FC0. FC0 is a ( ) frameshift mutation in the rIIA cistron of phage T4. Most of the isolated revertants resulted from second site mutations within the rIIA cistron. One of these second site mutations was called FC10. Crick then separated away FC10 from FC0 and found that FC10 had an rII- phenotype. He then selected for phenotypic revertants of the FC10 mutation and recovered a second site suppressing mutation that he called FC63. Is FC63 a ( ) frameshift mutation or a (-) frameshift mutation.

Answer :

hihirasohail

Answer:

The correct option is that its a ( ) frameshift mutation, just like the FC0 mutation.

Explanation:

Frame-shift mutations refer to an event of insertion or deletion at the level of DNA sequence. This effects the way (i.e., in what frame) the genetic code is read. These kind of mutations result in producing a dysfunctional protein product., which may be longer or shorter in length to the actual normal protein that was supposed to be made. A premature stop codon will create a truncated protein.

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mahima6824soni

The second site suppressing mutation that is called as FC63 is a + frameshift mutation.

The correct option is (a) + frameshift mutation.

What is frameshift mutation?

A frameshift mutation is one in which a nucleotide is inserted or deleted in such a way that the number of deleted base pairs is not divisible by three.

The term "divisible by three" is significant because the cell reads genes in three-base groupings.

This mutation cause phenotypic change and altered protein production.

Thus, the correct option is (a) + frameshift mutation.

Learn more about mutation, here:

https://brainly.com/question/17106056

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