Bissoy.com
Doctors Medicines MCQs Q&A

In an experiment of determining the order of gene in bacteria we use HFR which is gal+, Lac+, Ara+ and His+. If the recipient is negative for all these genes, and we selectively choose Gal + and get the pattern- 100 % recipients are Gal + 30% are His+ 55% are Lac + And only 5% are Ara+ What would be our inference?

In an experiment of determining the order of gene in bacteria we use HFR which is gal+, Lac+, Ara+ and His+. If the recipient is negative for all these genes, and we selectively choose Gal + and get the pattern- 100 % recipients are Gal + 30% are His+ 55% are Lac + And only 5% are Ara+ What would be our inference? Correct Answer Sequence of gene is Gal—Lac—His—Ara

While the HFR could incorporate in different positions by selecting one gene we are setting a start site for checking. Now the gene order agrees with the percent incorporation as the farther genes have a lower probability of incorporation.

Related Questions

In a transduction experiment where the recipient is Met-, Ala-, Gal- you observe a recombinant phenotype Met+, Gal+ in some strains and Gal+ Ala+ in some strains. But in none of the cases can you find Met+ Ala+. What is the sequence of the gene?
In and interrupted mating experiment, it is seem that the after 10 mins AziR gene in recipient, after 20 minuites there is appearance of tonR and after 15 mins the recipient is lac+ , but the recipient is almost never his+. Where in the genome is the ori of transfer?
In an experiment you have a U-Tube with two strains of bacteria in two arms. In one arm the bacteria are Gal+ and His-, in other the strain is Gal- and His+. If the two arms are joined by a membrane that doesn’t allow bacterial cells to pass to opposite site what will you observe when you plate each arm bacterial strain on minimal media?
In the following question, the first and the last part of the sentence/passage are numbered 1 and 6. The rest of the sentence/passage is split into four parts and named P, Q, R, S. These four parts are not given in their proper order. Read the sentence/passage and find out which of the four combinations is correct. S1. We go to schools, colleges, universities to complete our education and start earning our livelihood.  P. We take up jobs, practice professions, or start our own businesses so that we can earn money to make our living. Q. But which of these institutions make us capable of managing our own hard-earned money?—probably a very few of them. R. Financial literacy is knowing the basic financial management principles and applying them in our day-to-day life. S. As human beings, we are not expected to know the nitty-gritty of financial management.  S6. But managing our own money in a way that does not negatively affect us and our family is important.
You study the gene incorporation in recipient using HFR and get the following sequences- P-W-A-K, W-L-I-K, A-K-I-L, W-P-R-T-W-L. What is the order of the gene?
All the genes in the HFR that is transferred to the recipient cell before breakage of the conjugation channel is incorporated in the recipient genome. State whether it is true or false.
S1:Growing up means not only getting larger, but also using our sense and our brain is to become more aware of things around us.
P :Not only does he have a memory but he is able to think and reason.
Q :In this, man differs from all other animals.
R :Before we spray our roadside plants or turn sewage in to our rivers, we should pause to think what the results of our action are likely to do.
S :This is to say, he is able to plan what he is is going to do in the light of his experience before he does it.
S6:In other words, we must develop and use our ability to reason, because the destruction or the preservation of the places in which we live depend on us.

The Proper sequence should be:
S1: Growing up means not only getting larger, but also using our senses and our brains to become more aware of the things around us.
P: Not only does he have a memory but he is able to think and reason.
Q: In this, man differs from all other animals.
R: Before we spray our roadside plants or turn sewage into our rivers, we should pause to think what the results of our actions are likely to be.
S: That is to say, he is able to plan what he is going to do in the light of his experience before he does it.
S6: In other words, we must develop and use our ability to reason, because the destruction or the preservation of the places in which we live depends on us.

The Proper sequence should be:
Which of the following statements is/are correct? 1. Gene Editing deals with inserting genes from other organism while Gene Modification deals with altering genes that exists already within body. 2. Gene Modification process is time consuming while Gene editing is faster. Select the correct answer using the code given below.
The following sentences form a paragraph. These four parts are numbered as P, Q, R and S. They are not given in their proper order. Read the sentences and choose the alternative that arranges them in correct order. P. The hypothesis was proposed as an explanation for the increased prevalence of type-2 diabetes in certain populations by American geneticist James V. Neel. Q. Thrifty genes refers to a scientific hypothesis which states that obesity in some human beings can be explained by the existence of a ‘thrifty gene’ that aided the storage of excess energy as fat. R. The same genes, however, turned into a biological liability that led to obesity in some people. S. According to the hypothesis, certain genes, by helping in the storage of energy as fat, might have enabled human ancestors live through periods of famine, thus enhancing their chances of survival.