A conditional mutation expresses its mutant phenotype only under certain conditions (the restrictive conditions) and expresses the normal phenotype under other conditions (the permissive conditions). One type of conditional mutation is a temperature-sensitive mutation, which expresses the mutant phenotype only at certain temperatures. Strains of E. coli have been isolated that contain temperature-sensitive mutations in the genes encoding different components of the replication machinery. In each of these strains, the protein produced by the mutated gene is nonfunctional under the restrictive conditions. These strains are grown under permissive conditions and then abruptly switched to the restrictive condition. After one round of replication under the restrictive condition, the DNA from each strain is isolated and analyzed. What characteristics would you expect to see in the DNA isolated from each strain with a temperature-sensitive mutation in its gene that encodes the following?a. DNA ligase
b. DNA polymerase I
c. DNA polymerase III
d. Primase
e. Initiator protein

Answers

Answer 1

Answer:

a) DNA ligase

Due to temperature sensitivity DNA ligase action is impaired due to presence of multiple nicks   but the DNA replication will proceed

b)  Encoding polymerase I

Due to temperature sensitivity mutation occurs causing non-corrected strands to be obtained but DNA replication will continue

c) Encoding polymerase III

Replication is stooped here because of the importance of the enzyme in the synthesis  of new strand

d) Primase

The enzyme will induce primers in forward and lagging strands

Explanation:

DNA replication is facilitated by the functionality of enzymes in assisting  the formation of new synthesis

Temperature sensitive mutations

a) DNA ligase

Due to temperature sensitivity DNA ligase action is impaired due to presence of multiple nicks   but the DNA replication will proceed

b)  Encoding polymerase I

Due to temperature sensitivity mutation occurs causing non-corrected strands to be obtained but DNA replication will continue

c) Encoding polymerase III

Replication is stooped here because of the importance of the enzyme in the synthesis  of new strand

d) Primase

The enzyme will induce primers in forward and lagging strands

e) Initiator protein


Related Questions

Explain what is meant by the statement, "Cells are very different, yet very similar."
Write it in 125 words

Answers

A cell is the smallest unit in a living organism that is capable of carrying out all of the activities of life. It would stand to reason, then, that a cell could survive by itself. Indeed, there are many single-celled organisms that can be found all around us, such as an amoeba (a single-celled organism found in water); however, most of the living things we see are made of billions of cells that all work together. In the 17th century, after the invention of the microscope, Robert Hooke was able to see cells for the first time. Since then scientists have learned much about cells and have developed the Cell Theory, which says

How does DNA impact the
function of enzymes?

Answers

Answer:

DNA encodes the sequence of amino acid which uses the genetic code :3

Explanation:

:3

Answer:

dna dosent act directly onto other molocules, enzymes actually act on dna and copy its info onto more dna, or transcribes it into proteins. the biggest function of dna is that is can code a sequance of amino acids in proteins using a genetic code.

Explanation:

:)

An example of a non-specific intemal defense is:
Will give BRAINLIEST

Answers

Answer:

Mucous membranes

Explanation:

The epidermis (external) and mucous membranes (internal) represent the first non-specific barriers that act against invading pathogens and harmful substances. The mucous membranes separate the external environment surrounding the mucous cells from the body's internal environment. These membranes are considered as selectively permeable barriers that act to prohibit the passage of pathogenic microorganisms (e.g., bacteria) and harmful agents (toxic chemical substances).

The surprisingly low rates of genetic differences between different current human populations (about only 6.5%) and that most genetic diversity occurs person-to-person within a population rather than population to population points to:
A.
a common origin of Homosapiens sapiens in Africa from a small number of people
B.
a fairly high rate of gene flow between human populations
C.
a fairly short time, perhaps 200,000 years existing as a new species in Africa
D.
all of the above

Answers

Answer:

the answer for this question would be B.

a fairly high rate of gene flow between human populations

Genetic diversity is the result of heritable traits that vary within species. It is seen more in person-person than in population because the human population has a high rate of gene flow. Thus, option B is correct.

What are gene flow and drift?

Gene flow is the passing of the heritable traits outside and inside the population due to factors like migration or because of the gametes. The alleles possessing the characters are moved from one population to another.

In genetic drift, the allele frequency experiences an alteration in the genetic pool of the population. High genetic flow and the drift in humans result in genetic diversity. It causes very neutral differences to appear and are most likely to be seen in person rather than in the whole population.

Therefore, the high gene flow results in genetic diversity in the person.

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In eukaryotes transcription takes place in the _________. translation takes place in the ________.

1. cytoplasm/cytoplasm
2. nucleus/cytoplasm
3. nucleus/ribosomes
4. ribosomes/nucleus

Answers

Answer:

3

Explanation:

The correct answer will be option-Transcription takes place in the nucleus, and translation takes place in ribosomes.  

The regulation of genes is regulated and controlled by two main processes of central dogma called transcription and translation.

Transcription is the process of formation of messenger RNA or mRNA from a single strand of DNA whereas translation is the formation of protein from mRNA.

This process takes place in different sites in prokaryotes and eukaryotes. In prokaryotes, both transcription and translation take place in the cytoplasm but in eukaryotes, the transcription takes place in the nucleus whereas translation takes place in the ribosomes present in the cytoplasm.

Thus, the selected option is the correct answer.

*****
3
To Tºp
6) rur and Ynz​

Answers

GO AWAY!!!!!!!!!!!!!

The law of universal gravitation states that both mass and distance of objects affect the gravitational force between them. Gravitational force increases as the mass of the objects increase. Gravitational force decreases as distance between the objects increases. Why are these statements considered scientific law, and not scientific theory?

Answers

If the mass of both of the objects is doubled, then the force of gravity between them is quadrupled; and so on. Since gravitational force is inversely proportional to the square of the separation distance between the two interacting objects, more separation distance will result in weaker gravitational force

2
What does the author describe in the passage?
A
the history of the Hoover Dam and its impachon the Southwest region
B
the development of different types of hydropower
C the political environment in America during the construction of the Hoover
Dam
improvements in irrigation along the Colorado River before the Hoover
Dam was built

Answers

Answer: A . the history of the Hoover Dam and its impact on the Southwest region.

Explanation:

This question is based on the article, ''The Hoover Dam'' by Michael Stahl. In it the author begins by describing what hydroelectricity is and how it came about.

The author then used the Hoover Dam to illustrate the points made about hydroelectricity by first giving a brief history of the construction of the dam and the sacrifices it took to build it. The impact the dam had on the area it supplies - the Southwest - was also analysed.

PLEASE HURRY
Cells contain structures, called organelles, that carry out specific functions for the cell. Which of the following is NOT true regarding the theory of cells?


A. All living things are made up of one or more cells.


B. As the cell grows, so does the size of the organism.


C. Cells grow and respond to changes in their environment.


D. All cells are considered to be living.

Answers

Answer : B

because that statement is wrong.

Which statement describes a difference between a jellyfish and a frog?

A jellyfish lacks vertebrae, whereas a frog has a spinal cord.
A jellyfish cannot reproduce sexually, but a frog can.
A jellyfish makes its own food, whereas a frog is a heterotroph.
A jellyfish is a prokaryote, whereas a frog is a eukaryote.

Answers

A, Jellyfish have no vertebrae and frogs do have spinal cords

Answer:

A

Explanation:

Describe how the mutation has effected the protein coded by this gene?

Answers

Answer:

By changing a gene's instructions for making a protein, a mutation can cause the protein to malfunction or to be missing entirely. When a mutation alters a protein that plays a critical role in the body, it can disrupt normal development or cause a medical condition.

Compared to the distances between the planets of our solar system, the distances between stars are usually
A) much greater
B) much less
C about the same

Answers

Answer:

the distances are much greater

Explanation:

because stars have their own light and energy so they dont need to orbit planets or other stars.Planets dont have their own light so they need to orbit a star and a star is usually orbited by multiple planets (sorry for my bad english)


Given the DNA template strand below type the complementary mRNA that would be made during transcription.
TATAGCGTACGGCTAT

Answers

Answer:

AUAUCGCAUGCCGAUA

Explanation:

Give an example of interspecific competition.

Answers

Two lions and leopards that vie for similar prey

does this help at all

Duchenne Muscular Dystrophy (DMD) is a sex-linked trait that causes muscular weakness that gets worse as a person ages. Which is most likely true of Duchenne Muscular Dystrophy? A. DMD can only be inherited by females. B. Females with DMD always have a mother with DMD. C. The gene for DMD is located on the X or Y chromosome. D. The gene for DMD is most active in the cells of the reproductive organs.

Answers

Answer: C

Explanation:

DMD is s*x linked trait. This means that we have to consider the   chromosomes XX and XY. For a male to have DMD, this means the mom must must pass down the allele for DMD. The mom can either be a carrier OR she has to have DMD and the dad can only pass down the Y chromosome. For a daughter to get DMD, this means the dad has to have the allele for DMD and so does the mom. That means that the dad has DMD and the mom can either have DMD or be a carrier. Based off of this logic, we know that the answer isn't B.  Because they tell us DMD is s*x-linked trait, it means that the gene for DMD is on the x or y chromosome.

Which statement explains why the structure of sickle cells differs from normal red blood cells?

A
The gene mutation affects protein synthesis.

B
The gene mutation prohibits DNA replication.

C
The gene mutation inhibits the cell’s ability to produce tRNA.

D
The gene mutation affects the cell’s ability to produce ATP.

Answers

Answer:

a

Explanation:

The structure of sickle cells differs from normal RBCs because of the gene mutation that affect the protein structure.

Sickle Cells:

These cells look like a crescent moon. They are unable to transport oxygen. This cause anemia in the patient.

It is an inherited disorder in which point mutation in the lead to the different protein structure. This results in the sickled RBCs.

Normal blood cells are round in shape and able to transport oxygen.

Therefore, the structure of sickle cells differs from normal RBCs because of the gene mutation that affect the protein structure.

To know more about Sickle Cells,

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What is an observational study? How is it different from a controlled experiment?

Answers

Answer:

Observational study is when you observe your subject and take more notes rather that writing down quantitative data. Meanwhile, a controlled experiment is more quantitative.

Explanation:

The introduction of Caulerpa, also known as killer algae, into California was ultimately the result of _______.
a. hull fouling
b. the aquarium trade in exotic, nonnative aquatic species
c. intentional release
d. an algae farming company

Answers

Answer:B

Explanation:

Harry had been learning about joints in one of his classes at school. On the way to the emergency room he tried to recall what types of tissues made up the different joints. He knew ligaments, tendons, and other connective tissues associated with joints often did not heal quickly. He wasn't sure whether it would better to have broken a bone or to have sprained something. Correctly match each tissue type to the sentence. Some of the words may be used more than once.

__________ is what makes up the war criage of synovial joints.
A symphysis is an amphithjoint where__________ joins adjacent bones
Epiphyseal platos are the growth plates of long bones which are made up of ___________ and are an example of a synchondriosis.

a. Dense regular conective tissue
b. hyallne cartilage
c. Dense irrregular conective tissue
d. fibrocartilage

Answers

Answer:

The correct answer is -

1. hyaline cartilage

2.  fibrocartilage

3. hyaline cartilage

Explanation:

1. The hyaline cartilage covers the articular cartilage of the synovial joint that is translucent or clear as glass-like cartilage that has a firm consistency and a high amount of collagen.

2. A symphysis is an amphiarthrotic joint which is a fibrocartilagenous joint that joins with the adjacent bone. This is a very tough or strong tissue.

3. The growth plate of the long bone or epiphyseal plates are examples of synchondrosis,which is a hyaline cartilage composed tissue.

QUESTION 1
How many pairs of ribs are in the human body?
O 6 pairs
O 12 pairs
O 9 pairs
O 16 pairs
QUESTION 2
Which facial bone forms the chin?
O The Mandible bone
O The Mandible & Maxillae bone
The Maxillae bone
O The Mandible, Maxillae & Zygomatic bone

Answers

Answer:

12 pairs

mandible

Explanation:

12, eiether your a adult or kid.

How can we get bacteria off of us

Answers

Answer:

by washing ourselves with soap

er by washing our hands
taking a hot/warm shower (cuz anything hot kills bacteria)

-If you can please awsner both parts of the question in complete sentences!!

-Thank you for the help I really do appreciate it!♡!​​

Answers

1.) the most closely related above are the dolphin and the fish. this is because they are in the same kingdom, phylum, class, order, and family. because the specific names of the organisms are not listed, that is as specific as i can get.

2.) the wolf is the least related to all of the rest of them because it is in a different class. class- mammal, bird, fish, insect, reptile, amphibian, etc.

PLEASE HURRY I WILL MARK BRAINLIEST
A scientist has discovered an unidentified organism. The cell theory states that which of the following must be true about this new living thing?

A. Its cells come from preexisting cells.

B. All its cells have different functions.

C. It is not made up of cells.

D. All its cells are considered non living

Answers

Answer:

A

Explanation:

All living things can produce and divide from preexisting cells.

IL. Answer the following:
1. Eucalyptus trees should be planted all along the sewage ponds. Analyse
Eucalyptus​

Answers

Eucalyptus trees should be planted along sewage ponds. Accepted Answer: Eucalyptus trees should be planted along sewage ponds because these trees absorb all surplus wastewater rapidly and release pure water vapour into the atmosphere.

Which of the following will most likely decrease genetic diversity?

А increased reproduction

B selective breeding

C mutations

D immigration

Answers

i pretty sure the answer would be the second option, or answer B

Selective breeding dangers reduced genetic diversity can result in certain insects or diseases attacking, which could be quite devastating.  Thus, option B is correct.

What is the cause of selective breeding in genetic diversity?

Selective breeding can contribute to a large reduction in the genetic diversity of farmed populations, endangering long-term evolutionary progress and limiting populations' ability to adjust to environmental changes.

Unknowingly selecting uncommon illness genes as part of a desirable characteristic might cause difficulties with particular organisms, such as the high prevalence of deafness in Dalmatian dogs.

Genetic diversity is typically reduced by selective breeding, since only a few individuals are employed to produce enormous numbers of offspring. The population's survivability may be impacted by this.

Therefore, selective breeding will most likely decrease genetic diversity.

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Explain the difference between independent variables, dependent variables, and control variables.

Answers

Answer:

Independent: Purposely altered

Dependent: Changes with respect to the independent being altered

Controlled: Never changes

Explanation:

An independent variable is a variable in which does not rely on other pieces/variables of an experiment to assume a value. In other words, it does not change when other variables change. However, it can be changed intentionally by the scientist.

A dependent variable is a variable in which its change in value relies on other pieces/variables of an experiment to assume a value. So, if the indeoendent variable is changed, the dependent variable will change as well. The opposite is not true though - if the dependent variable changes (for whatever reason), the independent variable hasn't necessarily been changed.

A controlled variable is a variable that stays CONSTANT throughout an experiment. It is never changed, and nothing will change it. An example of a control variable is the number of participants in a study: no more participants are being added, and no participants are being removed. The number of participants remains STATIC throughout the study.

Which ocean zone supports more species and numbers of organisms than any other zone?

Answers

Answer:

the photic zone or better known as the sunlight zone, since photosynthesis occurs here, more than 90 percent of all marine life live in this sunlight. the sunlight zone goes about 600ft deep

Original DNA → T A C C A T G G A A C A A G T

Answers

Answer:

what do you mean

Explanation:

what is embryogenesis???​

Answers

Answer:

Embryogenesis is the development of an animal or plant embryo.

OR

Embryogenesis is the process of development of an embryo from zygote. In embryogenesis, the zygote undergoes repeated cell division through mitosis. The divisions help in the growth of an embryo. Cells undergo differentiation attaining specific shape, size and function. Cell differentiation occurs at specific location resulting in the production of different tissue, organs and organ system.

What is a real world example of enzymes being used?​

Answers

Answer:

Enzymes are used in the food, agricultural, cosmetic, and pharmaceutical industries to control and speed up reactions in order to quickly and accurately obtain a valuable final product. Enzymes are crucial to making cheese, brewing beer, baking bread, extracting fruit juice, tanning leather, and much more.

Explanation:

yessir

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Please help :) will give brainliest i PROMISE and ty A rectangular garden measures 9 feet wide by 12 feet long. If a hose costs $8 per foot, how much would it cost to place a hosethrough the diagonal of the garden? Esmeralda's familyfamily went out to dinner paying a 20% tip at the end of the mill their credit card was charged $51 what was the amount when the bill without the tip? 15x-8-3x=16 pls help Take a closer look at this part of the first paragraph of Wilsons speech.What does Wilson say about what Americans should do and say about the war?Check all of the boxes that apply.Americans should speak in favor of neutrality.Americans should not be afraid of taking sides.Americans should not act and speak in the same way.It is important for every American to have the same spirit. plz help due in 10 minutes will give brianlest to best answer Some of the causes for students to drop-out from university Surface area of a rectangular prism if W = 6in L = 9in and H = 2in In an extraction experiment similar to your expt. 4, you attempt to separate 2-naphthol from cyclohexane, both of which are dissolved in ether. You attempt the separation by extracting the organic layer with a 5% NaOH (aq) solution (made by adding 5.00 g of NaOH to every 100 mL of water). Assuming that all of the base present in the aqueous solution reacts with the phenol during your extractions, what is the minimum volume of the aqueous NaOH solution needed to deprotonate 20.0 g of 2-naphthol in order to extract it into the water layer? Clearly show all calculations. After removal of the phenol from the ether layer, only cyclohexane would remain. Concisely explain how you could efficiently isolate relatively pure cyclohexane from the ether layer. Besties help me please help please!!!!!!!!! If we are missing the percent, then whatwill go over 100 in the percent proportion? Which expression is equivalent to -6(-2/3 +2x) HELP PLEASE!! GIVING BRAINLIEST!! If you answer this correctly ill answer some of your questions you have posted! (18pts) Someone please help meee find the value of y-7 when y=15 HELP!If none of my outfits match, how can I make them match? what are some examples of the united states influencing world events through its foreign policy? PLEASE HELP PLEASE PLEASE PLEASE PLEASE HELP PLEASE PLEASE PLEASE HELP ME OUT The water of a tank is initially 24 feet, and it is beingdrained at a rate of 3 feet per day. The equation belowexpresses the water level, y, in feet, in terms of the numberof days, x, since the tank began draining.y = 24 - 3xA scientist might be interested in the x-intercept of thisequation because it represents the moment when the tankwill be empty. Which of the following is the x-intercept ofthe equation above?