A particular protein has the amino acid sequence: . . . Ala-Pro-His-Trp-Arg-Lys-Gly-Val-Thr . . within its primary structure. A geneticist studying mutations affecting this protein discovered a mutant that produced a shortened protein molecule that terminated within this region. In this mutant protein, the His became the last amino acid. What DNA single-base change(s) would cause the protein to terminate at the His residue

Answers

Answer 1

Answer:

The correct answer is - nonsense mutation.

Explanation:

The given amino acid sequence  Ala-Pro-His-Trp-Arg-Lys-Gly-Val-Thr of a particular protein is affected by a mutation that leads to the shortened protein that ends in this region only. As we know the His amino acid becomes the last amino acid so in such case is it takes place due to nonsense mutation that is the only mutation or change result to terminate before or at the His codon.

The Trp codon which is coded by UGG codon could have been changed to either a UAG or a UGA codon in this case.

The correct answer is - nonsense mutation.


Related Questions

Can someone pretty pls help me with the producer and decomposer side :3

Answers

Answer:

definition: producer are organism that make their own food

carrotsa strip of orange trees

any green plant

definition : are mainly fungi decomposer are organism that decomposes or break down , organic materials such as the remain of dead organism

earthworm and bacteria are some decomposer

mushroom

insects

A characterstic common to both difussion and active transport is that

1. Enzymes are required
2. Oxygen is moved across a membrane
3. ATP is needed
4. The movement of molecules occurs

Answers

Answer:2

Explanation:

Help please and thank you :) .(Cycling of matter and energy flow quick check).

1. Which of the following describes the amount of organic material that is available for transfer to the next trophic level after subtracting material used for respiration?
-Gross Primary productivity
-Biomass
-Net Primary productivity
0r
-Primary productivity

2. Suppose a plant is eaten by a mouse, the mouse is consumed by a snake, and the snake is in turn consumed by a hawk. What could be assumed about the level of available organic matter in the mouse versus the plant?
-There will be less organic matter available.
-There will be more organic matter available.
-Organic matter does not transfer between the plant and the mouse.
0r
-They both have the same amount of organic matter.

3. How does biomass change from lower to higher trophic levels?
-It fluctuates.
-It increases.
-It decreases.
0r
-It stays the same.

4. The incomplete burning of _____ in gasoline is known to create black carbon and contribute to global warming.
-ethanol
-methane
-carbon
0r
-carbon dioxide

5. Why are there less secondary consumers in an ecosystem than producers?
-Around 90% of energy from one trophic level to the next is available.
-There is less land to use for habitat after the producers grow.
-More tertiary consumers will eat secondary consumers over producers.
0r
-There isn’t enough energy available to support more secondary consumers.
...Thanks...

Answers

Answer: 1. Net primary productivity

2. there will be less organic matter available

3. it decreases

4. ethanol

5. there isn’t enough energy available to support secondary consumers

Explanation:

1. Gross Primary productivity is the organic material that is left after subtracting energy used for respiration. It is always greater than net primary productivity.

2. There will be less organic matter available for the mouse because plant is a primary producer of biomass and it lies at the lowest trophic level as we go up in the trophic level the level of energy reduces.

3. The biomass will decrease while going from lower to higher trophic levels this is because of the fact that the plants or other autotrophs are the primary producers of biomass.

4. The incomplete combustion of gasoline and methane are the major fuels contributing to global warming.

5. There are less secondary consumers in an ecosystem because more tertiary consumers are dependent on secondary consumers for their food and energy requirements.

Learn more about gross primary productivity:

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How can identical twins, who have the same genome, grow up to experience different states of health as adults?

Answers

There are environmental differences that can affect the way they look and behave. As identical twins get older they may look more and more different, because they are exposed to more diverse environments.

4
Select the correct answer.
According to Piaget's theory of cognitive development, which stage is over by the end of the first two years of a child's life?
OA. preoperational stage
ОВ.
concrete operational stage
Ос.
formal operational stage
OD
sensorimotor stage
Reset
Next

Answers

Answer:OD --sensorimotor stage

Explanation: There are four stages According to Piaget's theory of cognitive development which are  Sensorimotor, Preoperational, Symbolic thought  and Concrete operational.

The sensorimotor stage  is the first stage of a child's development which starts at birth till age 2. This stage is characterized  with the child acquiring knowledge by physical activities with his or her environment  which develops to developing  fine motor skills and the ability to use symbols to create  mental representations   toward end of the stage.

Please choose the correct answer option below

Answers

Answer is C:

Explanation:

Answer:

C

Explanation:

I'm pretty sure that is the one

atmosphere hydrosphere biosphere geosphere

help solve number 2

Answers

Answer:

Oceanic CO2  

Cold temperatures from the ocean dissolves CO2 and stores it into deep waters.  

Marine Plants/algae  

Plants and Algae go through Photosynthesis  

Sediments  

Plants and Algae sink to the bottom of the ocean building up large amounts of carbon.  

 

what are the benefits of the cluster of curriculum ?​

Answers

so the teachers can focus instructions to meet all the students academic needs

Answer:

Empowering all teachers by expanding awareness and providing preparation, Teachers can focus instruction to better meet all students academic needs. on -going assessment of students

The pedigree below shows two generations of individuals within a family. The pedigree shows
that a daughter has a genetic trait, even though neither of her parents nor her siblings have the
trait.
O
7. How can the daughter have the genetic trait if no one else in the family has it?
A. The trait is determined by a recessive allele.
B. The trait is not inherited.
C. The trait is determined by a dominant allele.
D. The trait is passed only from female to female.

Answers

D)

Explanation:

The traly is passed only from female to female

Answer:

Explanation:

b

(((30 POINTS!)) ((DUE SOON))

Sickle cell anemia is a recessive genetic disease. Treshon and Shameka are married and planning to have children. Treshon has sickle cell anemia. Shameka does not have the disease, but her father did. As a student of genetics, develop an explanation for the chances that this couple would have a child with sickle cell.

Answers

Answer:

Hi

Explanation:

hi

Which organism is likely to carry out the process shown in the diagram?

Answers

the organism that is likely to carry out this process is a plant

The diagram shows a football field that represents a geological time scale. Why are no organisms labeled between the end zone and 30 yard line on the left side of the field? Scientists disagree about the fossils from this time period. Scientists have not studied that part of the time scale. There is very little fossil evidence for this time period. There are too many fossils to name.

Answers

Answer:

the is b

Explanation:

Answer:

b

Explanation:

boi

A red blood cell is 7.5 µm in diameter. It is magnified 2000 times. Calculate the diameter of the image seen through the microscope in millimetres.

Answers

Answer:

15 mm

Explanation:

Given that,

The diameter of a RBC = 7.5 µm

It is magnified 2000 times.

We need to find the diameter of the image seen through the microscope in millimeters.

The size of the diameter is given by :

[tex]d=2000\times 7.5\\\\=15000\ \mu m\\\\or\\\\d=15\ mm[/tex]

So, the diameter of the image seen through the microscope is 15 mm.

5. A moth has two alleles for spots. It can have brown or white spots. The white allele is recessive and
the brown allele is dominant.
a) In one population, the brown spot allele frequency is 0.15. What is the white spot allele frequency? (2
points)

Answers

Answer:

0.7.5

Explanation:

I hope this is right

!20 POINTS!

Which behavior is an example of how animal communication helps a population survive?


A. A bird destroys another bird's nest so that it can nest in that spot.


B. Giraffes and zebras compete for water at the same watering hole.


C. Ants use their bodies to form a bridge that other ants can use to get to food.


D. A bee returns to the hive and shares the location of food with other bees.

Answers

Answer: The correct option is D.

A bee returns to the hive and shares the location of food with other bees.

Explanation:

This is because animal communication is the interaction or sharing of information that occur between animals of the same species. It is how animals commune in a language they will understand. A bee returns to the hive and shares the location of food with other bees is a behavior of animal communication that help population to survive because, the bee share information to other bees which is beneficial to them and aid they to survive as we know that food is an essential for survival.

Answer: D

Explanation:

You need to receive a
disease to be expressed.
gene from each parent for sickle cell
a. Dominant
b. Recessive

Answers

______________________B - Recessive

Recessive gene coding is saved & stored tight in your DNA, waiting fpr the opportunity it's always wanted. Once it finds a partner, it starts to get to get busy. Working & perfecting for Sickle Cell Disease/Sickle Cell Anemia.

__________________________________

the non essential part of a flower are the​

Answers

Answer:

Calyx + Corolla

Explanation:

Answer:

the non-essential or accessory parts of the flower because they do not directly participate in the process of sexual reproduction.

Explanation:

Does mitosis occur in all organisms?

Answers

Answer:

Mitosis happens in all eukaryotic cells (plants, animals, and fungi). It is the process of cell renewal and growth in a plant, animal or fungus. ... Mitosis is also important in organisms which reproduce asexually: this is the only way that these cells can reproduce

Explanation:

It happens in all eukaryotic cells so no cause there are organisms made of prokaryotic cells such as bacteria and archaea :)

Fill the blanks
_____________ ______________ occurs when several pairs of alleles contribute to a single trait. This results a ________________ of phenotypes

Answers

1) Multiple
2) Alleles
3) Pleiotropy

Which process is responsible for the loss of biomass at each level of the ecosystem

Answers

Answer:

The correct answer is - excretion

Explanation:

In any ecosystem, there is a loss of biomass and energy at each level of the energy pyramid or trophic level. Biomass and energy both lost due to completing the life processes.

All the biomass is eaten at each level as not all food they take completely digested and removed by the process of excretion in various forms such as solid feces, carbon dioxide, and water in respiration and water and urea in urine.

Which of the following statements DOES NOT accurately describe the experimental design used by Fred Griffith?

A.The type of bacteria injected into the mouse was the independent variable in his experiment. B.The injection of the live rough bacteria into the mouse is a control because it was used as a standard of comparison for other experimental setups.
C.The dependent variable in the experiment was the health of the mouse after injection.

Answers

Answer:

The correct answer is B. It is false that the injection of the live rough bacteria into the mouse is a control because it was used as a standard of comparison for other experimental setups.

Explanation:

The experiment conducted by Frederick Griffith in 1928 was one of the first experiments to show that bacteria could transfer genetic information.

Griffith used two slightly different pneumococcal strains in his experiment. One of them was harmless to the mice, while the other was not. Using each strain separately, the logical thing happened: the mice died with the fatal strain, and nothing happened with the harmless.

Then, Griffith killed the deadly strain, and mixed both strains, introducing them into the mice. After this, the mice died, which allowed us to verify that the bacteria can transfer genetic material even after dying, through the transformation process.

Describe the structure of a chloroplast. How do the inner membranes differ from the outer membranes?

Answers

Answer:

the outer membrane has small organic molecules but the inner membrane is less permeable and studded with transport proteins.

Explanation:

The outer membrane has the small organic molecules

Clouds with light rain.

In your current location, the weather is much like this picture: cloudy and drizzly. The weather has been like this for several days. The good news is that the weather report says warmer weather is coming soon.

Which type of front most likely caused this weather?

occluded front
stationary front
warm front
cold front

Answers

Warm fronts move more slowly and are less violent than cold fronts. They are associated with warm air moving over cold air and are more likely to produce large regions of light to moderate rain, drizzle or snow. Cirrus clouds and alto cumulus, along with fog, often precede warm fronts as they move through an area. The milder weather that follows will be warmer in temperature. So it would be warm fronts.

Answer:

Warm Front

Explanation:

Using the Gizmo, find a carbon atom path from the atmosphere to the cement plant. (Hint:
One of the ingredients in cement is limestone.)

Path:

Answers

Answer:

Path: Atmosphere -> Ocean -> Shells -> Limestone -> Cement Plant  

The path of a carbon atom is - air, ocean, shells/coral reef, limestone, cement plant.

Cement is manufactured through a closely controlled chemical combination of calcium, silicon, aluminum, iron, and other ingredients.

Common components used to manufacture cement include limestone, shells, and chalk or marl combined with shale, clay, slate, blast furnace, silica sand, and iron ore.Limestone form the coral reefs that are massive structures deposited by coral polyps.Coral reefs get their carbonate from the ocean that comes from air Carbon in limestone is produced in a cement plant when heated to make calcium oxide. The waste product is carbon dioxide.

Thus, the path of a carbon atom is - air, ocean, shells/coral reef, limestone, cement plant.

Learn more about:

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a short paragraph that explains how the ATP cycle works

Answers

Answer:

The process of phosphorylating ADP to form ATP and removing a phosphate from ATP to form ADP in order to store and release energy respectively is known as the ATP cycle.

Explanation:i hope this is the answer

Table salt and table sugar, examine the chemical formulas for salt and sugar. What do they tell you about what type of bonding is present in each compound

Answers

Answer:

Explanation:

Table salt, also NaCl (sodium chloride) is an ionic compound in which there is a transfer of an electron from the sodium atom to the chlorine atom. This electron transfer is characteristic of an ionic/electrovalent combination/bonding. While table sugar, also C₁₂H₂₂O₁₁ (sucrose) is an organic compound; thus has covalent bond within it's carbon chain, carbon-hydrogen bond and carbon-oxygen bond. Covalent bonding involves the sharing of electrons between two atoms, these electrons that are shared are referred to as "shared pair".


B. What is the diploid number of the original cell?
(how many chromosomes does it have?)

Answers

Answer:

equation is 2n = 46

Explanation:

humans have 2 sets of 23 chromosomes

Two full sets of chromosomes make up a diploid cell. Humans mostly have diploid cells, which have 23 pairs of chromosomes each, for a total of 46 chromosomes.

What are chromosomes?

There are 22 pairs of autosomes and two sex chromosomes in this. The person received one copy of each pair of chromosomes from their mother and the other copy from their father.

A "diploid cell" is one that has two copies of each chromosome; human somatic cells are diploid and have 46 chromosomes, 22 pairs of autosomes, and a pair of sex chromosomes.

Histones, which function as packing proteins for the majority of eukaryotic chromosomes, join forces with chaperone proteins to attach to and compress the DNA molecule, maintaining the integrity of the molecule.

Therefore, diploid cells, have 23 pairs of chromosomes each, for a total of 46 chromosomes.

Learn more about chromosomes, here:

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How does hibernating underground allow a frog to conserve water?

Answers

Answer:

Explanation:

because firstly they have shelter to keep warm and to rink water

Which of your cells has allof your DNA code?
Only hair cells
All of your cells
Only brain cells
Heart and skin cells

Answers

Answer:

answer is all of your cells because DNA is present all

in all places

The interaction among animals of the same species is called courtship.


Please select the best answer from the choices provided

T
F

Answers

The definition of courtship is "the behavior of male birds and other animals aimed at attracting to a mate"

So yes, the answer is true.

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