Define the term genetic complementation. Describe how the term...

Question

Define the term genetic complementation. Describe how the term applies to an experiment in which two lysis-defective bacteriophages are able to coinfect a bacterial cell and produce lysis.

Accepted Answer

Hello everyone and welcome to today's video. So genetic complementation is a phenomenon in which two individuals with blank that affect the blank can combine their genetic material to restore the blank phenotype. As answer to is a, we have different mutations, same biological pathway. Then wall type as answer choice B, we have different mutations, then different biological pathways, then mutant as answer choice C we have same mutation, then different biological pathway, then wall type and as answer choice D we have same mutation, different biological pathways, then wall type. Well, I really want you to recall from previous videos how genetic complementation is going to work. We generally have two mutations and these two musicians are going to in a way complement each other in order to restore this wall type phenotype in the offspring of the two individuals. Now, this is what we're going to be inputting into this last blank here, this wall type phenotype. And therefore, we're going to be able to cancel out answer choice B as it has into that blank. Now, in order for these mutations to complement each other, they cannot be occurring at the same gene if they are occurring at the same gene, then this gene will be affected and it won't be able to work in the offspring. So they must be occurring in different genes so that they complement each other, so that whatever one individual is missing the other will provide and vice versa. Therefore, this will restore the wall type phenotype in the offspring. So they must be occurring in different genes or how the question puts it, they must be different mutations. So we're going to cancel out C and D as they have same mutation in the first blank. Now, the only answer choice left is answer choice. A which states that genetic complementation is a phenomenon in which two individuals with different mutations that affect the same biological pathway can combine the genetic material to restore the wall type phenotype. This is correct and therefore we're going to highlight answer choice. A as a final answer to a question. I really hope this video helped you and I hope to see you on the next one.

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Define the term genetic complementation. Describe how the term applies to an experiment in which two lysis-defective bacteriophages are able to coinfect a bacterial cell and produce lysis.

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