Recall in class the example of incorporating heavy or light nitrogen labels into DNA to investigate how DNA is replicated. Imagine if, instead of labeling DNA, the experiment used heavy labeled RNA bases. What would be the outcome if you examined the DNA strands after completion of DNA replication in the presence of heavy labeled RNA bases?

Answers

Answer 1

Answer: You would not notice any difference or any labeled base, because RNA is not used to make DNA.

Explanation:

DNA is a molecule that contains the genetic information in all living things. The molecule consists of two strands that wind around each other to form a double helix structure where the strands are joined by hydrogen bonds. It is a nucleotide polymer where each nucleotide consists of a sugar called deoxyribose, a nitrogenous base (which can be adenine, thymine, cytosine or guanine) and a phosphate group (derived from phosphoric acid). What distinguishes one polynucleotide from another, is the nitrogenous base and thus the sequence of DNA is specified by naming only the sequence of its bases. The sequential arrangement of these four bases along the chain is what encodes the genetic information.

Consider that DNA replication is semi-conservative, which means that each strand of the DNA double helix functions as a template for the synthesis of a new complementary strand.  This process leads from one starting molecule to two "daughter" molecules, in which each new double helix contains one new and one old strand. Then, if nitrogen tags are incorporated into the DNA, they will register on the old strand of the new DNA molecule.

On the other hand, RNA (ribonucleic acid) is a molecule similar to DNA but has only one strand and consists of a sugar (ribose) and alternating phosphate groups. Attached to each sugar is one of the four bases adenine, uracil, cytosine or guanine. The process of RNA synthesis, called transcription, consists of making a complementary copy of a piece of DNA. During this process, an enzyme called ARN polymerase, adds nucleotides that are complementary to the DNA strand. Then, this new RNA strand has new nucleotides. Thereby, if you examine the DNA strands after completion of DNA replication in the presence of heavy labeled RNA bases, you would not notice any difference or any labeled base, because RNA is not used to make DNA.


Related Questions

Which of the following is an example of planning for the future to avoid environmen damage?

A. Creating a landfill

B. Cleaning up an oil spill

C. Mining aluminum from the earth’s crust

D. Evaluating potential effects of development

Answers

Answer:

B is the answer

cleaning up an oil spill

B, cleaning an oil spill.
Oil spilling can cause pollution so cleaning it up can help prevent that

At which position is the northern hemisphere experiencing spring?

Point A
Point B
Point C
Point D



Answers

Answer:

c

Explanation:

List 4 significant problems with nuclear power plants.

Answers

Answer:

Risk of a Meltdown, Weapons Proliferation Risk, Cost, Nuclear Waste

Explanation:

Answer:

According to the article https://www.leonardodicaprio.org/the-7-reasons-why-nuclear-energy-is-not-the-answer-to-solve-climate-change/ there are 7 problems so pick your favorites I guess

1) It takes a very long time to go from from planning to operation

2) The cost

3) Weapon Proliferation risk

4) Meltdown risk

5) Mining leads to lung cancer

6) Miscalculations of CO2 equivalences

7) Radioactive waste

what does Risk Management mean

Answers

Answer:

(in business) the forecasting and evaluation of financial risks together with the identification of procedures to avoid or minimize their impact.

Explanation:

Answer:

Risk management mean managing the risks you take if financially, biologically, and in life. Indentifying, assesing,  and controlling risks.

Should humans use synthetic materials that have natural material that is the same chemically? PLZ I NEED THIS NOW

Answers

Answer:

It Depends . Like Some People Use Fake Skin For Tattoos , Made To Practice Stitches , Or Injections .. It Just Really Depends On What You Are Doing If This Helps ..

Plz help me I am timed well mark brainliest if you are correct!

Answers

Answer:

The answer is A

Explanation:

Answer:

A) elliptical path

Explanation:

have a nice day!! :)

12. What is the relationship between DNA and chromosomes?
A. DNA is tightly coiled chromosomes
B. Chromosomes are tightly coiled DNA
C. A section of DNA is called a chromosome
D. There is no relationship between DNA and chromosomes

Answers

Answer:

I believe your answer is A.

if this is a two pick answer than your answer is both A and B.

Explanation:

What is the relationship between a DNA molecule and a chromosome?

In the nucleus of each cell, the DNA molecule is packaged into thread-like structures called chromosomes. Each chromosome is made up of DNA tightly coiled many times around proteins called histones that support its structure.

Answer: A. DNA is tightly coiled chromosomes

Explanation:

Rhesus monkeys are more closely related to rabbits than they are to horses. (B) Horses and cows have identical amino acid sequences in their cytochrome c. (C) Humans are more closely related to rabbits than they are to rhesus monkeys. (D) Plants and animals have no similarities at all. (E) Mammals are more closely related to reptiles than they are to fish.

Answers

Complete question:

A scientist used the amino acid sequence of cytochrome c in different species to consider evolutionary relationships.

The data below summarizes the numbers of differences in the amino acid sequences of cytochrome C found in the selected species

Species compared              Number of differences

Human-chimpanzees                              0

Human-Rhesus monkeys                        1

Human-Horses or Donkeys                    7

Human-Cow, Pigs or sheeps                  7

Human-Rabbits                                        7

Mammals-Birds and reptiles                  10-15

Mammals-Fishes                                    18-20

Mammals-Plants                                     45-48

Interpretation of the data supports which of the following statements?

(A) Rhesus monkeys are more closely related to rabbits than they are to horses.

(B) Horses and cows have identical amino acid sequences in their cytochrome c.

(C) Humans are more closely related to rabbits than they are to rhesus monkeys.

(D) Plants and animals have no similarities at all.

(E) Mammals are more closely related to reptiles than they are to fish.

Answer:

(E) Mammals are more closely related to reptiles than they are to fish.

Explanation:

So, what you need to do here is to compare the number of differences found in each comparison. Remember that this information is only regarding cytochrome C. For instance, we can see that between humans and chimpanzees, the number of differences is 0. Their amino acid sequences do not differ at all. On the contrary, the comparison of mammals and plants threw a value of 45-48 differences, meaning that they are very different from each other, almost 50%.

So, this is how you need to interpret the values of the differences in this table. Now, let us go to the options,

(A) Rhesus monkeys are more closely related to rabbits than they are to horses. Rhesus monkey was not compared to any group other than humans, so we could not say that they are more related to one animal or the other.

(B) Horses and cows have identical amino acid sequences in their cytochrome. When comparing humans with horses and then humans with cows, the number of differences was the same -7-. But these results do not indicate which are the differences. Remember that we are comparing amino acid sequences, so probably the number of differences of each group with humans is the same, but the amino acid sequences between horses and cows are not.

(C) Humans are more closely related to rabbits than they are to rhesus monkeys. Humans and rhesus monkeys express only one difference in the amino acid sequence, while humans and rabbits exhibit seven differences. This result means that humans are more closely to rhesus monkeys related than they are to rabbits.

(D) Plants and animals have no similarities at all.

As we mentioned before, plants and mammals have a difference of almost 50% in their amino-acidic sequences. It does not mean that the other 50% is also different.

(E) Mammals are more closely related to reptiles than they are to fish.

The amino acid sequence of mammals and reptiles show 10-15 differences

The amino acid sequence of mammals and fish show 18-20 differences

So yes, mammals seem to be more related to reptiles than to fishes because the number of differences with reptiles is fewer.

Does The translation between mRNA and amino acids is the same for all living things support the theory of evolution

Answers

Answer:

the translation between mRNA and amino acids are the same for all living sells. for example the mRNA codon CAG codes for glutamine in all living cells

HELP ASAP!! In angiosperms, reproduction takes place in
A-cones ,
B-pollen.
C-flowers.
D-leaves.

Answers

Answer:

i think ur answer B.)

Explanation:

sorry if wrong

hope this helps

This category of endangerment occurs when organisms are still abundant in its natural range, but declining in numbers:

A. Endangered species
B. Threatened species
C. Invasive species
D. Endemic species
E. Red list species

Answers

The answer to the question is B

what gene combination will have 50% chance of occurring if two heterozygous black and chickens are mated 
please answer!!

Answers

It will be the one with capital and lowercase for example you will get (using Hh alleles for example)

(HH, Hh, Hh, hh)

So it will be the 2nd and 3rd combo, the heterozygous dominant it will have one dominant allele and one recessive

What
is a difference between systemic and pulmonary circulation?

Answers

Answer:

Systemic circulation carries oxygenated blood to the body and pulmonary circulation carries deoxygenated blood to the lungs.

Hope this helps!

Which of the following is an example of a vestigial structure?
-the wings of red-tailed hawks
-the hind limbs of a house cat
-the fins of a shark
-Wisdom teeth in humans

Answers

Answer:

the wings of a red tailed hawks

Which is it MUTUALISM, PREDATION, and COMPETITION


The Canadian lynx and snowshoe hare both live in the northern forests of Canada and Alaska. The population of snowshoe hares rises and falls based on resource availability When the population of snowshoe hares falls, the Canadian lynx suffers from lack of food resources.​

Answers

Answer:

Predation.

Explanation:

haploid daughter cells form

Answers

Answer:

ok

Explanation:

Meiosis is a type of cell division that reduces the number of chromosomes in the parent cell by half and produces four gamete cells. The process results in four daughter cells that are haploid, which means they contain half the number of chromosomes of the diploid parent cells.
Hope this helps you!

74. As layer upon layer of sediments are deposited, the process of the presses them
together.

Answers

Answer:

GO GET BOY

Explanation:

Give a scenario in which a new ecosystem would be created

Answers

global warming. if the world pollutes too a certain level of extreme , a new ecosystem would do some good

girIs j-oin


Z00m

ID - 755 0884 2828
pass - awJ9EU​

Answers

When is this meeting??

A researcher is comparing amino acid sequences
for the protein hemoglobin from several primate
species. What does the degree of similarity in
sequences among the primate species indicate
about these species?
A.
how closely related they are
B.
how frequently they interbreed
C.
how rapidly they can evolve in the future
D. how efficient their circulatory systems are

Answers

The answer is gonna be B how frequently they interbreed

What might be limiting resource for sharks in their ecosystem

Answers

Answer:

Sharks keep ocean ecosystems in balance

Sharks limit the abundance of their prey, which then affects the prey of those animals, and so on throughout the food web. Because sharks directly or indirectly affect all levels of the food web, they help to maintain structure in healthy ocean ecosystems. HOPE THIS HELPS!!!!!!!!

Explanation:

How did black leaders and abolitionists embody the democratic principles and ideals of liberty and equality in their actions?

Answers

The Civil Rights Movement did not suddenly appear out of nowhere in the twentieth century. Efforts to improve the quality of life for African Americans are as old as the United States. By the time of the American Revolution in the late eighteenth century, abolitionists were already working to eliminate racial injustice and bring an end to the institution of slavery

Describe the stages of invasion up to and including the spread stage. Also, include one barrier to could make
an invasion fail and briefly describe it.

Answers

Answer:

Introduction, naturalization, colonization, and dispersal or spreading.

Explanation:

There are four main stages of invasion i.e. introduction, naturalization, colonization, and dispersal or spreading. In the first stage, the specie is introduced in the environment, in the second stage the specie adopt the environment, in the third stage the specie started growth and make colonies to increase its population and in the last stage the specie disperse in the environment through different means and spreading of that organism occur. The failing of adaptation to the environmental conditions leads to the failing of invasion of a specie.

Plz help me well mark brainliest if you are correct!

Answers

Answer:

A(i think)

Explanation:

Earth is a satellite because it moves around the sun. The moon is a satellite because it moves around Earth. Earth and the moon are called "natural" satellites. ... These machines are launched into space and orbit Earth or another body in space.

help pls il give brailist if correct

Answers

Answer:

I believe that the answer is A.

Explanation:

This option makes the most sense because of the industrial and agricultural revolutions.

Leigh's disease is a mitochondrially inherited disease with symptoms that include seizures, fatigue, impaired reflexes, breathing problems, and ataxia. The pedigree shows the presence of Leigh's disease in three generations. Individual 4 had two daughters and one son, and individual 6 had one daughter and two sons. Which of the individuals indicated are affected by Leigh's disease

Answers

About the question:

You will find the pedigree in the attached files

Answer:

individual 4 → Affected woman → Black circleindividual 5 → Affected woman or man → Black circle or squareindividual 7 → Healthy woman → Empty circleindividual 10 → Affected boy → Black Square

Explanation:      

Mitochondrial inheritance is the transmission of a disease or a trait from the maternal line.

Most of the DNI is in the nucleus, but there is also DNI in mitochondria. Sperm cells hardly transfer mitochondrial genes to the progeny, so mitochondrial DNI is mostly inherited from the maternal side. If there exists any mutation in this mitochondrial DNI, the whole progeny of the mutated woman will be affected, as they will get the mother genotype carrying the mutation. On the contrary, if an affected man is carrying a mutation in mitochondrial DNI, non of their descendants will get the disease.

Before answering the question, let us remember the pedigree symbols.

Squares represent Males/Men Circles represent Females/WomenEmpty symbols represent healthy/non-affected individualsSolid black symbols represent sick/affected individuals

In the exposed pedigree, we can see that the mother is affected by the disease (individual number 2), so all her children are also affected (individuals 4, 5, and 6) because the disease is mitochondrially inherited.

Individual 3 is a healthy man, so individual 4 must be an affected woman (Black circle). As she is the one affected, then all her children will also be affected. This couple had one boy and two girls. Individuals 8 and 9 are girls (circle), so individual 10 must be the affected boy (black square).  

On the other hand, individual 6 is an affected man (black square), son of individuals 1 and 2. This man couples with a woman, and they have all healthy children. So this woman (individual 7) must be healthy. Even though the man is affected, all their children are not because their mother (7) is not. Remember that sperm cells do not transmit the mitochondrial genes to the progeny.      

And finally, individual number 5 might be either a man or a woman. In any case, this person is also affected by Leigh's disease.  

Identify the existence of Neutrons.

Answers

The atomic number (the number of protons) did not equal the atomic weight.

True or False?

The cuticle scales of the hair
always point toward the follicle

Answers

Answer:

The cuticle is a transparent outer layer of the hair shaft. It is made of scales that overlap one another and protect the inner layers of the hair (Figure 3-4). The scales point from the proximal end of the hair, which is closest to the scalp, to the distal end, which is far- thest from the scalp

Explanation:

Examine the photographs of 16 species of anole lizards and sort them into as many groups as you want according to how they appear in the photographs. Explain how you grouped the lizards and your rationale for the various groupings. If you picked a body feature, speculate about the advantages or disadvantages of such a body feature in the environment that species occupies.

Answers

Answer:

On the basis of physical appearance.

Explanation:

We grouped the lizards into various groups on the basis of similarities and differences in the body structure, appearance and colour etc. The legs of anole lizards are small legs with pads on their feet for gripping surfaces which give them the advantage to climb up the trees while on the other hand, these small legs can't help in the survival on the land because they can't run too fast from their predators with these short legs so these legs has benefit in climbing the tree but disadvantage in running on the land.

-)))
Calcium is the most abundant mineral in the human body. Calcium ions are needed for bone mineralization and tooth health,
regulation of the heart rate and strength of contraction, blood coagulation, contraction of smooth and skeletal muscle cells, and
regulation of nerve impulse conduction. When blood levels of calcium get too high, the thyroid gland is stimulated to release
calcitonin, which initiates actions to lower blood levels of calcium.
Consider the role of calcitonin. ALL BUT ONE is the result of the release of calcitonin by the thyroid gland.
A)
inhibits osteoclast activity
B)
stimulates calcium uptake by the bones
stimulates the synthesis of vitamin D
D)
decreases reabsorption of calcium by the kidneys

Answers

Answer:

decreases reabsorption of calcium by the kidneys

Explanation

from what ive found, calcitonin stops osteoclast activity, makes bones stronger, stimulates the sythesis of vitamin D, but does not (in anywhere i have read) decrease reabsorption in the kidneys. I really hope this helps.,,

if im wrong i am so sorry :(

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