g A conditional knockout mutant is created by inserting one ____________ site into each of the introns flanking an essential exon of a gene.

Answers

Answer 1
Answer:
loxP sites

Explanation:
Generally, two loxP sites are inserted into the introns flanking an essential exon of the target gene.

Related Questions

You are writing an article summarizing the research you have conducted in your particular field of psychology. You have decided to present your data in a series of charts and graphs. In which section of a standard scientific article would these charts and graphs most likely appear?

Answers

Answer:

The section of a scientific article that graphs and tables are likely to appear in is called "Results".

Explanation:

The sections of a kinetic article are: Title, Authors and Affiliation, Abstract, Introduction, Methods, Results, Discussion, Acknowledgments, and Literature Cited.

The section called "results" is where the researcher will show what he was able to discover through his scientific experiment. This section usually contains a lot of information and a lot of relationships with parts of the experiment and with other sections of the article. For this reason, in order to be able to present everything quickly and dynamically, it is normal for the researcher to present this section through graphs and tables.

Which of the following is a true statement about independent events? They must happen at the same time. They must happen one right after the other. They cannot influence each other. They cannot happen at all.

Answers

Answer:

They cannot influence each other.

Explanation:

Independent events have no effect on each other.

Hope it helps.

Mitosis is divided into phases. A phase of mitosis is shown. All of the chromosomes are lined up at the center of the cell. Which phase of mitosis is shown in the diagram? prophase metaphase anaphase telophase

Answers

there is no diagram but i believe the answer plus be metaphase! a quick way to remember that is if they are lined in the middle, it’s metaphase!

When all of the chromosomes of a dividing cell are lined up at the center of the cell, the phase of mitosis is called metaphase.

Mitosis has 4 main stages:

ProphaseMetaphaseAnaphaseTelophase

The chromatin materials condense and become visible as chromosomes under the microscope during prophase after the disappearance of the nuclear membrane.

The chromosomes line up at the equator of the center of the cell and each chromosome is engaged by the spindle fiber at the metaphase.

The spindle fibers start contracting to pull sister chromatids of each chromosome apart towards opposing poles during the anaphase.

Further contraction of the spindle fibers migrates sister chromatids to opposite poles. Chromosomes at each pole decondense and the nuclear membrane reappears around each. All these happen at the telophase.

More on mitosis can be found here: https://brainly.com/question/13536882

5.
is the process by which artificial means are used to protect an individual
from a specific disease.
a.Cowpox
b. Microbes
c. Vaccination

Answers

Answer:

C. Vaccination

Explanation:

vaccination is the administration of a vaccine to help the immune system develop protection from a disease. Vaccines contain a microorganism or virus in a weakened, live or killed state, or proteins or toxins from the organism.

What precautionary measure should be taken when storing oil and fats at home?why homogenization and pasteurization of milk are performed at an industrial scale?what are the possible hazards that come across while determining protein content of the meat by kjeldhal appratus?

Answers

Answer:

chutiya bhanchod gand mar du teri

Question 3 (Multiple Choice Worth 3 points)
(06.04 MC)
A student wants to study the effect of removing thermal energy from a system. Which of the following experiments should the student perform?
Close a circuit by adding a penny and record if the bulb glows.
Close a circuit by adding a nail and record if the bulb glows.
Gradually warm a liquid and record its change in state
Gradually cool a gas and record its change in state


Answers

Answer:

Gradually cool a gas and record its change in state.

Explanation:

The experiment is directed towards the removal of thermal energy from a system, so "gradually cool a gas and record its change in state" is the best experiment to use.

Hope it helps.

Streptomyces griseus produces the antibiotic Streptomycin, which inhibits protein synthesis by binding to ribosomes and preventing the binding of fMet‐tRNA. Why isn’t S. griseus harmed by its own antibiotic?

Answers

Answer:

See the answer below.

Explanation:

Antibiotic-producing bacteria are generally known to have a mechanism that enables them to be resistant to their own antibiotics. The mechanism that enables them to be resistant to their own antibiotic depends largely on the mode of action of the antibiotic substance.  

Some of the popular mechanisms used by bacteria to counter their own antibiotic substance include a mutation in the target gene, production of enzymes that inactivate the antibiotic compounds, or efflux of the compounds.

In the case of Streptomyces griseus, the inactivity of streptomycin has been linked with the production of a phosphatase inhibitor that prevents streptomycin from getting access to the target site. Hence, the organism is not harmed by its own antibiotic.

Many cells produce chemicals called _______, hormone-like substances that impact inflammation and reproduction.

Answers

Answer:

vesicles

Explanation:

A pea plant has one recessive allele for white flowers and one dominant allele for purple flowers. What flower color will the pea plant have

Answers

Answer:

the phenotype is PURPLE

Explanation:

The pea plant will have purple color due to the presence of a dominant allele.

What is the law of dominance?

In a heterozygote, one trait will mask the existence of some other trait for the same feature, according to Mendel's rule of dominance. The dominant allele will be expressed only, rather than both alleles contributing to a phenotype. The recessive gene will continue to be "latent," but it will be passed on to progeny in the same way that the dominant allele is.

Only kids with two copies of this gene will exhibit the recessive phenotype; these offspring will reproduce true when self-crossed. Dominant and recessive relate, by definition, to the genotypic interactions of alleles that result in the phenotype of the heterozygote.

The fundamental idea is genetic: which of the two alleles in a heterozygote gets expressed, resulting in an individual that has the same phenotype as one of the two homozygotes. The term "dominant trait" or "dominant allele" is occasionally used to refer to the characteristic associated with the dominant allele and "recessive trait" to the trait associated with the concealed allele. However, this could make it difficult to comprehend the idea of phenotype.

Therefore, the pea plant will have purple flowers due to the presence of a dominant allele.

Read more about the law of dominance, here

https://brainly.com/question/2931799

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Most hurricanes will originate a. near the North Pole. b. in the equatorial region. c. when the water and air are cold. d. below the ocean’s surface currents.

Answers

Answer:

The answer is c.

Explanation:

Answer:

c

Explanation:

What is the pathway of air into the body?

Answers

Answer:

mouth and or nose

Explanation:

air enters the respiratory system through the nose and mouth and passes down the throat and through a voice box.

Answer:

mouth or nose → nasal cavity → pharynx or throat → larynx or voice box → trachea → bronchi → lungs

Explanation:

edge

As we continue to learn, what allows our brain to reformat and adapt by developing new neural pathways?

Answers

Answer:

Developing new neural pathways

What factor about cellular respiration are you testing? (What makes the three bottles different?)

Answers

Answer:

The factor under study here is the gas inside of the bottles.

Explanation:

Cellular respiration is one of the key biological processes that are literally sustaining life. It occurs in every living cell in order to provide it the energy (in the form of ATP) to carry out the several processes required to function as a cell or as an organism as a whole.  

select the choices that are true statements of the similarities between dna and rna

Answers

Answer:

They are both acids

DNA is deoxyribonucleic acid, while RNA is ribonucleic acid.

1. which pair of bacteria can be differentiated by oxidase test?
A. Pseudomonas and E. coli
B. Salmonella and Proteus
C. Proteus and E. coli
D. Shigella and Salmonella

2. Colonies of which color would you expect on HE agar if shigellosis is suspected?
A. Pink
B. Red with black center
C. Red without black center
D. Green with black center
E. Green without black center

3. Colonies of which color would you expect on HE agar if Enterococcus sp. is suspected?
A. Pink
B. Salmon/orange
C. Red with black centers
D. Green with black centers
E. None of the above

Answers

Answer:

1. A. Pseudomonas and E. coli

2. B. Red without black center

3. B. Salmon/orange

Explanation:

Pseudomonas is referred to as an oxidase positive bacteria while E. Coli is an oxidase negative bacteria. The use of the oxidase test will be helpful in the differentiation of the two Bacteria according to their oxidase activity/properties.

Colonies of Red without black center color is what is expected on HE agar if shigellosis is suspected.

Colonies of Salmon/Orange color is what is expected on HE agar if Enterococcus sp. is suspected.

A is an agent that causes disease. All are pathogens.

Answers

Bacteria, viruses, and parasites are all agents that cause disease. They are all pathogens. Please mark brainliest!!!! Thanks!!!!!!!

The ____________ follows the coronary sulcus around the heart and supplies blood to the left atrium and ventricle.

Answers

Answer:

Coronary arteries

Explanation:

Answer: circumflex artery

Explanation:

What challenges would you expect scientists to face when growing plants in space? What challenges will the astronauts have with meeting their own energy needs?

Answers

Answer:

the challenges they would expect to see is the plants not having water or air

planted need water to have photosynthesis and since theres no water in space and little to no atmosphere the plants would suffocate

Specialized cells such as white blood cells interact with foreign particles in the body. A particular cell belonging to this category recognizes bacteria and forms a covering around it, pinching off the vacuole. The cell then performs . The foreign particles recognized by the particular type of cells differ from the ones recognized by another type of white blood cell. This situation indicates that the receptors are .

Answers

Answer:

specific

Explanation:

The immune system contains different types of cells that act in both innate and acquired (adaptive) immune responses to destroy pathogenic microorganisms that invade our body. The immune cells include B and T cells, dendritic cells, macrophages, neutrophils, eosinophils, monocytes, etc. These cells contain specific receptors that play different roles in the immune response. For example, macrophages and dendritic cells contain receptors required for antigen presentation, while white blood cells (B and T cells) have receptors required for antigen recognition.

Answer: I just took the test

Explanation:

Here's the answer

Indicate the steps of eukaryotic DNA replication in order, from when a germ cell enters gap 1 (G1) phase to the cell cycle termination.

a. RNA primers are added to provide a 3 end for elongation.
b. RNA is replaced with DNA and lagging strands are joined,
c. Prereplication complex forms at one of many origins of replication.
d. DNA polymerase synthesizes both the leading and lagging strands from 5' to 3'.
e. Active telomerase can extend the lost telomere region.
f. The initiation complex creates an active replication fork as helicase unwinds DNA.

Answers

Answer:

Explanation:

1. Prereplication complex forms at one of many origins of replication.

2. The initiation complex creates an active replication fork as helicase unwinds DNA.

3. RNA primers are added to provide a 3 end for elongation.

4. DNA polymerase synthesizes both the leading and lagging strands from 5' to 3'.

5. RNA is replaced with DNA and lagging strands are joined.

6. Active telomerase can extend the lost telomere region.

All these process are the steps involved in the replication of DNA. The replication of DNA involves the biological production of two identical copies of DNA from one original DNA molecule. This is a very important biological process of life as it is involved in the inheritance pattern of life. It is essential in that the 2 daughter cells formed must contain the same sets of chromosome as the original parent.

The term race currently has only biological connotations and is without any social significance.
A. True
B. False

Answers

Answer:

false

Explanation:

answer

False. Is the answer

In which process does the cell use a vesicle to move molecules into the cell

Answers

Answer:

Exocytosis describes the process of vesicles fusing with the plasma membrane and releasing their contents to the outside of the cell.

Don't write Endocytosis !!!

Hope this helps !

Explanation:

Answer:

it's Endocytosis

the other answer is wrong i just did the quiz

Explanation:

​If the sunflower seeds were modified and labeled as reduced sodium, this would mean that the reduced product has _____% less sodium than the original product:

Answers

Answer:

25%

Explanation:

The correct answer to the given question is 25%

A sunflower seed contains 9mg of sodium in it which can be modified and reduced as per needs.

If seed of a sunflower is modified and labeled as reduced sodium than this means that the sodium in the seed of a sunflower is reduced by 25% as compared to the original seed of sunflower in which no changing was made.

A researcher with a reputation for yelling at graduate students wants to know how the seed yield of transgenic plants (that are constructed specifically with the objective of increasing seed yield) she is growing in a plot compares to that of the wild-type plants growing in another plot. The entire population of the wild-type plants have been characterized, but she only has enough funding to measure a sample of the transgenics. Her null hypothesis is that the average seed yield of the transgenics will not differ from the wild-type. Her graduate student secretly has an arm injury, and hasn't told her for fear of inciting the researcher's reputed wrath. Because his arm hurts, the graduate student inadvertently collects less heavy samples. This type of non-random sampling would increase the likelihood of committing a Type II error.

a. True
b. False

Answers

Answer:

False, it is a Type I error.

Explanation:

A Type II error is produced by not reject the null hypothesis when the alternative hypothesis is true, thereby the null hypothesis is false, but is erroneously not rejected. On the other hand, the Type I error may be caused by random variation in the data or errors in the research techniques to be used when the sample is obtained.  

In this case, it is a Type I error caused when the sample was obtained (i.e., due to the graduate worker collected less heavy samples).

state and explain five uses of insects​

Answers

Answer:

They help our eco system

Explanation:

PROVIDERS

Insects are in nearly every food chain. Many larger animals—birds, bats, amphibians, and fish—eat insects before they in turn are eaten by predators. The dearth of insects is suspected to be a leading cause of recent declines in bird populations.

DECOMPOSERS

Waste-eating insects unlock nutrients for use by the ecosystem that would otherwise stagnate in dung, dead plants, and carrion. Dung beetles process parasite- breeding and grass-killing cattle dung in 23 months versus the 28 it would otherwise take.

PEST CONTROLLERS

By feeding on crop-threatening pests, predatory insects perform the role of pesticides without chemicals. This cuts pest-control costs and increases yields, saving agricultural industries billions of dollars every year—while reducing toxic pesticide residue on crops.

POLLINATORS

Nearly 90 percent of flowering plant species and 75 percent of crop plant species depend on pollination by animals—mostly insects. Overall, one out of every three bites of food humans eat relies on animal pollination in the production process.

SOIL ENGINEERS

Termites (and ants) can trans- form soil in hot, dry climates. Their tunneling aerates hard ground, helping it retain water and adding nutrients. In some regions, the introduction of termites has turned infertile land into cropland within a year.

Answer:

Pollination, Food, Silk, Dyes, Dermestids for cleaning skeletons.

Explanation:

Pollination.  Honeybees are among the most important of pollinators, and their efforts result in about 80% of all pollination in the United States.

Food. Honey is made by insects and can be consumed by humans.

Silk.  Most silk is produced from the cocoons of the Silkworm.

Dyes. Many insects provide dyes that are used in cosmetics and for coloring cakes, medicines and beverages.

Dermestids for cleaning skeletons. Carpet beetles feed on almost anything organic and have been used in museums by technicians to clean the skeletons of mammals.

Gases are formless fluid that expands to occupancy the space or enclosure they are contained in ? True or false

Answers

Answer:

true

Explanation:

Gases are in fact formless liquid that expands to occupancy the space or enclosure they are contained in.

DNA is found in the nucleus of our cells, bundled together into structures called

Answers

Answer: Chromosome

The polynucleotide DNA strands are wrapped on circular proteins called histones which then are condensed into a structure called chromosome.

Answer:

chromatin

Explanation:

DNA is normally found as a loosely contained structure called chromatin within the nucleus. When a cell is about to divide, the chromatin coils tightly and condenses to form chromosomes.

Which of the following group of bones in the human body categorized according to shape is correct?

Group of answer choices

skull bones-flat bones

arm and leg bones-short bones

coxal bone- short bone

wrist and ankle -long bones

Answers

Answer:

The answer is skull bones-flat bones

Hope this helps you

name two major vessels that return oxygen-poor blood to the heart. What are the damages for each? Where do they terminate?

Answers

Answer:

1. Head, neck, upper limb, thorax - super vena cava - top of the right atrium.

2. Lower limb - inferior vena cava - bottom of the right atrium.

Explanation:

The Heart pumps the oxygen-rich blood to the different parts of the body to Otake oxygen and nutrients to these organs and then takes the oxygen-poor blood returns from the body to the heart.

The two major vessels that return oxygen-poor blood to the heart are 1. superior vena cava (SVC) that drainages Head, neck, upper limb, thorax and terminate at top of the right atrium, and 2. inferior vena cava (IVC), Lower limb and terminate at bottom of the right atrium.

1. Head, neck, upper limb, thorax - super vena cava - top of the right atrium.

2. Lower limb - inferior vena cava - bottom of the right atrium.

How does music affect plant growth? To answer this question


Answers

It does not affect the plant growth
a plant needs water and sun and dirt to live. i’m pretty sure music has nothing to do with it.
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