Point mutations resulting in a single amino acid substitution provided evidence that: Select one: A. The genetic code is a triplet code. B. The genetic code is overlapping. C. The genetic code is not overlapping. D. The genetic code is degenerate. E. tRNAs recognize codons.

Answers

Answer 1

Answer:

C. The genetic code is not overlapping.

Explanation:

The genetic code is nonoverlapping because each nucleotide can be part of only one codon or 'codeword' during protein synthesis. Therefore, a particular point mutation in the nucleotide sequence can result in only one amino acid modification. A nonoverlapping genetic code indicates that the same letter (i.e., the same nucleotide) can not be used for two different codons. The non-overlapping nature of the genetic code was discovered by Tsugita and Fraenkel-Conrat (1960) by observing point mutations in the tobacco mosaic virus.

Answer 2

A change or modification in the single nucleotide base of the genetic material is called a point mutation. It can be either addition, deletion or inversion.

The correct answer is:

Option C. The genetic code is not overlapping.

This can be explained as:

The point mutation in the amino sequence tells that the codons are not overlapping and a single nucleotide is a part of only a single type of codon.

A single nucleotide can't be included in two codons.

The same letters of the bases purines and pyrimidines are not a part of two different triplets.

Therefore, point mutation tells that the genetic code is non-overlapping.

To learn more about point mutations and codons follow the link:

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Related Questions

help a girl out please thanks:))

Answers

I think it’s A because animal cells do not contain cytoplasm

Answer: to me its either a or c!

but i mostly feel like its c!

Explanation:

hope i helped, sorry if i got this answer wrong!

Give an example of positive slope.

Answers

Answer:

slope=4

or I found this one where it says as the number of people that quit smoking increases, the number of people who get lung cancer decreases if this is what you mean

Explanation:

I think this is what you were asking, as long as it is a positive number it is a positive slope

How are electrons distributed around the nucleus?

Answers

Answer:

they move in orbitals or subshells

Explanation:

Answer:

In layers of orbits around the nucleus. The first orbit is two electrons and the rest are 8 electrons each except the last orbit which are the valence electrons.

Explanation:

How is energy tansferred between stages of the carbon cycle?

Answers

Answer:





Plants take in CO2 from the atmosphere in order to produce energy in the form of sugar via photosynthesis using sunlight. Stage three: Carbon transfer from organism to organism. ... Carbon enters the atmosphere through respiration (animals or decomposers) and combustion (fossil fuels, wood).





Hope this helps have a nice day.

Health researchers measure how often people exercise and how often the same people come down with the flu. The researchers find a negative correlation between the amount of weekly exercise and the number of flu symptoms in an individual. Based on this information, which of the following can we assume are TRUE?

a. People who exercise more tend to have the flu less often.
b. People who have the flu more often tend to exercise less.
c. Exercising causes people to be more healthy and less susceptible to the flu.
d. People who get sick do not have time to exercise.
e. Since exercise reduces the flu, this is really positive correlation because the result is good.
f. Since the flu is a bad thing, this makes it a negative correlation.

Answers

Answer:

a, b, and c

Explanation:

Generally, correlation measures the strength of the relationship that exists between two variables. A positive correlation means that the two variables have the tendency to either increase or decrease together while a negative correlation means that the two variables tend to move in opposing directions, that is, as one is increasing, the other is decreasing and vice versa.

Now, the researchers find a negative correlation between the amount of weekly exercise and the number of flu symptoms in the subjects. This means that the more the exercise, the lesser the number of flu symptoms and the lesser the exercise per week, the more the flu symptoms. Hence, the assumptions that can be made directly or indirectly from the findings include

People who exercise more, get sick or have flu less often.People who have the flu more are most likely exercising very little or not at all.Exercising causes people to be more healthy and less susceptible to the flu.

The correct options are a, b, and c.

PLEASE HELP ASAP! WILL GIVE BRAINLIEST TO CORRECT ANSWER! HELP!! HELP!!
The diagram shows the structure of an animal cell.



The image of an animal cell is shown with some organelles labeled numerically from 1 to 6. The outer double layer boundary of the cell is labeled 1. A stacked disc like structure is labeled 2. A broad rod shaped structure with an irregular shape inside it is labeled 3. The entire plain section that forms the background of the cell and is within the outer boundary is labeled 4. A small circular shape within the large circular shape is labeled 5. The large central circular shape is labeled 6.


Which number label represents the cell membrane?


1

2

4

6

(this is middle school science)

Answers

Answer:

4

Explanation:

Answer:

4

Explanation:

I took the test

different versions of the same gene (represented
with letters)?

Answers

Answer:

Different versions of a gene are called alleles. Alleles are described as either dominant or recessive depending on their associated traits

Explanation:

true or false:
One difference between somatic cells and gametes is that somatic cells are identical to one another, while gametes are not

Answers

Answer:

true.

Explanation:

all the somatic cells of an organism have same number of chromosomes while gametes are haploid and have half number of chromosomes. so gametes are different from somatic cells.

Describe the metabolism of chemoautotrophs. What makes them different from photoautotrophs in terms of how they make chemical energy?

Answers

Phototrophs are organisms that capture light energy and convert it to chemical energy inside their cell.

Chemotrophs, on the other hand, do not get their energy from carbon. These are organisms that break down either organic or inorganic molecules to supply energy for the cell through chemosynthesis.

what do you notice when moving the slide around the stage?

Answers

Answer:

It's the same there is no change.

It doesn't change

Hope this helps

Most animal lineages evolved during the period.​

Answers

Answer:

Cambrian period

The Cambrian period, occurring between approximately 542–488 million years ago, marks the most rapid evolution of new animal phyla and animal diversity in Earth's history.

Explanation:

Answer:

h fcectjbtvrfehycrctzegrjtj

The diagram above represents the phases of the moon. Position 1 represents the
new moon. Positions 2 through 8 represent the phases of the moon that follow.
Which phase does position 8 represent?

Answers

Answer:

waxing crescent

Explanation:

Position 8 represents waxing crescent phase. It is observed after a new moon and can be observed until the first quarter of moon.

What are the phases of moon?

The waxing and waning nature of the moon is responsible for its various phases. This is due to the fact that moon is the only natural satellite of the earth. It revolves around the earth in a fixed orbit.

As earth revolves around the sun, the sunlight that falls on moon makes us visble those parts. Thus, it appears that moon is changing its shape.

A lunar month which is of 29.5 days usually is contains four primary and four intermediate phases. It is described as: New moon, Waxing crescent moon, First quarter, Waxing gibbous moon, Full moon, Waning gibbous, Last quarter and Waning crescent moon.

These phases have specific time in which they can be observed in the sky. New moon is an exception, as no part of the moon is visible then.

The phases of the moon are therefore considered as astronomically important.

Learn more about moon, here:

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PLS HELP, Why is gene flow important to the overall health of a species?

Answers

Answer:

Gene flow is an important mechanism for transferring genetic diversity among populations. ... Gene flow is expected to be lower in species that have low dispersal or mobility, that occur in fragmented habitats, where there are long distances between populations, and when there are small population sizes.

Explanation:

Answer:

Because it is important for transferring genetic diversity among populations.  Even low levels of gene flow can have a large impact, counteracting the other evolutionary force.

Explanation:

PLS HELP

Place the following images in the chronological order that represents the process of pollination.





Question 4 options:

2, 3, 1, 4


3, 2, 4, 1


1, 2, 3, 4


2, 3, 4, 1

Answers

Answer:

1 4 2 3 sorry if i am wrong i hope it is wright

what is a warm air mass that rises over a cold air mass?​

Answers

Answer: warm front

Explanation: When a warm air mass meets a cold air mass, the warm air rises since it is lighter. At high altitude it cools, and the water vapor it contains condenses. This type of front is called a warm front. It generates nimbostratus clouds, which can result in moderate rain.

A hawk eats a mouse. This kills the mouse, but it also means that the remaining mice will not have to compete as much for food with each other. Based on this information, what is the relationship between the hawk and the mouse?
A. The two organisms are in a mutualistic relationship.
B. The two organisms are in a predator-prey relationship.
C. The two organisms are in a parasitic relationship.
D. The two organisms are in a competitive relationship.

Answers

Answer:

The two organisms are in a predator-prey relationship.

Explanation

because the hawk is the predator, it ate the mouse, and th mouse was they prey, it was eaten

Answer:

B

Explanation:

1. How does the cell membrane allow animals to move without rupturing the cells in the body?

2. How does a cell membrane allow some molecules to pass right through the membrane?

3. Why is it important the some molecules (oxygen and carbon dioxide) be allowed to pass through the cell membrane without the use of a transport system?

4. How does the cell membrane allow the cell to reproduce into two separate cells?

5. In the lab, small bubbles would merge with the larger bubbles. How does this property of cell membranes demonstrate how a vesicle can transport substances from one organelle to another?

6. Cells require molecules that cannot simply pass through the cell membrane. Explain how the cell can use proteins to transport these molecules across the cell membrane.

Answers

.

Explanation:

1)The cell membrane functions as a semi-permeable barrier, allowing a very few molecules across it while fencing the majority of organically produced chemicals inside the cell. Electron microscopic examinations of cell membranes have led to the development of the lipid bilayer model (also referred to as the fluid-mosaic model). The most common molecule in the model is the phospholipid, which has a polar (hydrophilic) head and two nonpolar (hydrophobic) tails.

2) simple diffusion across the cell plasma membrane. The structure of the lipid bilayer allows small, uncharged substances such as oxygen and carbon dioxide, and hydrophobic molecules such as lipids, to pass through the cell membrane, down the concentration gradient is , by simple diffusion.

3) some molecules, such as carbon dioxide and oxygen, can diffuse across the plasma membrane directly, but others need help to cross its hydrophobic or however, because they are charged the polar, they can't cross the phospholipid part of the membrane without help .

4) during fission a copy of the DNA is made and attached to the cell membrane as well. As this cell elongate in preparation for fission, the two DNA copies are pulled apart two opposite ends of the cell. New membrane material is deposited between the two ends of the cell, and a new wall grows between them .

5) UMASS STEM-ED From Bubbles to Cell Membranes Workshop. Bubble ... dynamic nature which can't be properly appreciated in a static textbook. ... the small thread through one of the straws.

6) example of passive transport and active transport across a cell membrane so, cell membranes are semipermeable meaning they have control over what molecules can or cannot pass through. Some molecules can just drift Inn.

choose all that apply.
The heart ___.

pumps blood to the body.

has four chambers.

is part of the cardiovascular system.

is made of skeletal muscle.

works with the respiratory system.

(you can pick more then one!)​

Answers

The 1st, 2nd, and 3rd are true.

The person above is right!

how can HIV affect individuals day to day life
- be precise

Answers

Answer:

that seems hard

Explanation:

A particular mountain stream is home to a population of salamanders that are red in color. In the past year, a second population of salamanders that are dark blue in color moved into the same
stream. Scientists researching the stream have recently discovered young salamanders that are red with dark blue patches on their bodies.
What can the scientists conclude from this evidence?
The Salamanders are suffering from a bacterial disease
The salamanders are on the verge of becoming extinct
The Salamanders undergo sexual reproduction
The Salamanders undergo sexual reproduction

Answers

The Salamanders undergo sexual reproduction

What is a model..???

Answers

What kind of model there is many kinds

Answer:

two definitions 1 a person trying in something to show pepole like dresses

2 a modle in science so scienntist can see and go wow this is what it is like the dinosur museum the t rex is a modle of how it would look like

Explanation:

hope it helps keep on questioning on lol

What is formed at the end of meiosis?
two genetically different cells
two genetically identical cells
four genetically different cells
four genetically identical cells

Answers

Four genetically different cells.

Meiosis I produces two haploid daughter cells, but mitosis produces 2 diploid daughter cells.

Answer:

C

Explanation:

four genetically different cells

What are proteins made from?

Answers

Answer:

amino acids

Explanation:

Answer:

proteins are built from a set of only telwenty amino acid ,each of which has a unique side chain.The chain of amino acids have different chemistries

Which of the following cell types is haploid?
O body cell
O sperm cell
O skin cell
O liver cell

Answers

Answer: sperm cell

Explanation: haploids only contain one set of chromosomes (not paired)

The answer that I got is sperm cell

The process of carbon fixation occurs through what

Answers

Answer: Carbon fixation is the process by which inorganic carbon is added to an organic molecule. Carbon fixation occurs during the light independent reaction of photosynthesis and is the first step in the C3 or Calvin Cycle.

4. Free or low-cost apps have few of the same benefits as fitness trackers.
True
False

Answers

The given statemnet is false because  Free or low-cost apps can provide many of the same benefits as fitness trackers, albeit with some limitations.Option B

Fitness trackers are dedicated devices designed specifically for monitoring physical activity and collecting data related to fitness goals. They often include features like step counting, heart rate monitoring, sleep tracking, and GPS tracking. These devices may offer a more seamless and integrated user experience, with optimized hardware and software for tracking and analyzing fitness data.

However, free or low-cost apps can offer similar benefits and functionalities, albeit with some trade-offs. Many smartphone apps are available that can track steps, monitor heart rate, record workouts, and provide guidance for various exercises. These apps can be downloaded and installed on smartphones, making them accessible and convenient for users.

While some features might be more accurate or reliable in dedicated fitness trackers due to specialized sensors, smartphone apps can still provide valuable data and insights for tracking fitness progress. They can offer personalized workout plans, track progress over time, provide reminders and notifications, and offer social features for sharing achievements and connecting with others.

Moreover, free or low-cost apps often come with the advantage of being customizable, allowing users to choose the features and functionalities that are most relevant to their specific fitness goals and preferences. They can be easily updated and expanded with new features as technology advances.

In conclusion, while dedicated fitness trackers may offer a more comprehensive and optimized experience, free or low-cost apps can still provide many of the same benefits, making them a viable alternative for individuals seeking fitness tracking capabilities.

Option B

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2. Identify the epithelial tissue that is most suited to each of the following functions. a. diffusion of gases across lung air sacs b. mechanical protection and waterproofing c. secretion of mucus and movement of mucus d. stretchy quality that allows expand as the lumen is filled e. secretion, absorption and chemical protection f. mechanical protection of a moist surface

Answers

Answer:

e. secretion, absorption and chemical protection

Explanation:

Epithelial tissues is responsible for the protection of the skin, absorption of nutrients during digestion and secretion of waste materials. These tissues form covering to all body surfaces. They also perform a variety of other functions such as excretion of waste substances, filtration of air from dirt and particles and clean the air that is inhaled, diffusion, and sensory reception.

Why might scientists use computer models in research instead of conducting an experiment on the real system they would like to study?

Answers

Answer:

Using the real system might mess up and using a computer model is clearer and gives a more advanced view

Someone help me give me the answer

Answers

B. Volcanic Eruptions
I feel like its d but im not sure

Defend it: viruses are not alive. Select the five correct statements. A. They don't make their own membranes. B. They have their own proteins. C. They have no metabolism outside the host cell. D. They don't move. E. They don't respond to their environment. F. They don't have cytoplasm or ribosomes. G. They have only one nucleic acid.

Answers

Answer:

viruses are not alive because:

they do not make their own membranes.

they don't have cytoplasm or ribosomes.

they have only one nucliec acid.

they have no metabolism outside the cell.

they don't move.

Explanation:

all these statements are true.

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