A scientist studying the effects of radiation on DNA performs an experiment in which she exposes a sequence of nitrogen bases found in DNA to radiation. The DNA before and after the radiation is shown below.
Use the evidence to determine whether a mutation has occurred, and if so, interpret that mutation in the answer sheet provided

Before Exposure: ATCGTCA; After Exposure: ATTCGTCA

A. No mutation has occurred to the DNA sequence.

B. A nitrogen base has been deleted from the DNA molecule.

C. A nitrogen base has replaced another nitrogen base in the DNA molecule.

D. A nitrogen base has been added to the DNA molecule.

Answers

Answer 1

Answer:

D. A nitrogen base has been added to the DNA molecule.  

Explanation:

You can see that the sequence for the nitrogen bases are in the exact same order after the exposure, this rules out A.  You can count how many bases there are, 7 before and 8 after so it cannot be B. Lastly, given that they are in the same order as were before and that a base has been added, you can see that no bases were replaced (so not C) and that D is your answer.  


Related Questions

what gas will make a flame bigger?

Answers

Methane gas I think so

ANSWER ASAP:
What are the basic
needs of humans? What are basic needs of
animals? How are these similar or different?

Answers

Answer: 1. Human beings have certain basic needs. We must have food, water, air, and shelter to survive. If any one of these basic needs is not met, then humans cannot survive.  2. In order to survive, animals need air, water, food, and shelter (protection from predators and the environment); plants need air, water, nutrients, and light. Every organism has its own way of making sure its basic needs are met. 3.Humans and Animals both have similar social skills. ...

We have facial expression similar to that of a mouse. ...

We talk things while sleeping just like dolphins. ...

Just like Humans, Cows also have regional accents. ...

Dolphins, just like Humans get occasionally high.

Explanation:

What are two external conditions that must be
met for a seed to sprout?

Answers

Answer:

Temperature, water and oxygen.

Explanation:

There are 3 answers yes, but any 2 of them should work.

Answer:

I will give all the external conditions, you can choose 2 of them <3

Explanation:

All seeds need water, oxygen, and proper temperature in order to germinate. Some seeds require proper light also. Some germinate better in full light while others require darkness to germinate. When a seed is exposed to the proper conditions, water and oxygen are taken in through the seed coat.

I suggest you choose water and oxygen

Have a great day!

ANSWERRR FAST Earthquakes happen as a result of:

Two continental plate's converging

Two oceanic plate's converging

Two tectonic plates transforming
( i have more questions!!!)

Answers

Answer:

Hey mate......

Explanation:

This is ur answer.....

Two tectonic plates transforming

Hope it helps!

Brainliest pls....

Follow me! ;)

List four real-life scenarios where the human body may have to undergo lactic fermentation.

Answers

cheese, yogurt, buttermilk, sour cream, and pickles are lactic acid fermenters. Yogurt and cheese both start with a source of sugar (i.e., lactose from milk).

Hope this helped

Some scientists claim recent evidence suggests birds should be reclassified to share more taxonomic groups with dinosaurs. What type of evidence would provide the best support for this claim?
A.evidence showing birds shared similar habitats with dinosaurs
B.evidence showing birds shared similar nutritional requirements as dinosaurs
C.evidence showing birds shared similar behaviors with dinosaurs
D. evidence showing birds shared a common genetic history with dinosaurs

Answers

Answer: D.

Explanation: I don’t really know how to explain it, I just know it’s right

Some scientists claim recent evidence suggests birds should be reclassified to share more taxonomic groups with dinosaurs. The liable options seems evidence showing birds shared a common genetic history with dinosaurs. The correct answer is option D.

What is the class of birds ?

It is the class aves that belong to the kingdom Animalia.

The birds and the dinosaurs have the same genetic history that is the phylogenetic relationship of both the species is almost same and they both show a similar set of characteristics.

They had multiple set of characteristics that were similar to both and they shared the common characteristics. The points are written as following :

1.Egg Laying

2.Scales

3.Feathers

4.Beaks

5.Diets

6.Reptilian Relations

7.Three-Toed Limbs

8.Claws.

These were the common characters that were present in both the categories.

Learn more about birds at :

https://brainly.com/question/25120645

#SPJ2

Hi! Could You Help Me? - Pick A Scenario That You Believe Will Have The Greatest Impact On A Food Web In Your Local Ecosystem And Explain -

Answers

3: Trees are very eco friendly and they are what help us breathe natural air. They have a impact in a pro and con way. Pro, they build more stores, homes, and things we need in those spaces. Con: They are killing our fresh air and we don’t need that. The world is already going through disasters, and we are getting animals extinct.

What three properties of water cause the oceans to change temperature so
slowly?

Answers

Answer:

because it has highest specific heat capacity

A student is given a tissue sample to examine under a microscope . Which of the following would be evidence that the tissue sample she's examining is from a plant?

1. Prokaryote , cell wall

2.Eukaryote, cell membrane, presence of mitochondria

3. Prokaryote , cell membrane , presence of a flagellum

4. Eukaryote , cell wall , presence of chloroplasts

Answers

It’s the 4th choice

Antibodies start the inflammatory response. True or False?????????

Answers

Answer:

True

Explanation:

A person's debt-to-income ratio describes:
A. how much money a person can borrow from a bank at any given
time.
B. how frequently a person has to make payments on a significant
debt.
C. how much the person has borrowed compared to how much he or
she earns.
D. how often the person's credit score changes based on increasing
levels of debt.

Answers

Answer:

A. how much money a person can borrow from a bank at any given

time.

Explanation:

The debt-to-income (DTI) ratio measures the amount of income a person or organization generates in order to service a debt.

A 52-year-old woman has difficulty initiating voluntary movements. She can clearly state what she intends to do, describe exactly how she would do it, and picture herself doing it easily. When she is able to begin the motion, she can complete it smoothly and accurately, but she has difficulty beginning the motion. If the difficulty arises from a defect in one particular area of the nervous system, which area is most likely to be involved

Answers

Answer:

Basal Ganglia

Explanation:

The Basal ganglia function is to regulate the voluntary movements or autonomic movement. This is done by receiving and transmission of impulses. Impulses are received for upcoming movement from the cerebral cortex and then process and adjust from where it is convey to the thalamus which then relays this information back to the cortex. The well defined movement instruction is finally sent to the skeletal muscles through the tracts of the pyramidal motor system. It also function in planning and modulation of movement, memory and eye movement.

There are five types of basal ganglia corpus striatum, claustrum, amygdala, substantia nigra and subthalamic sails which all function together.

hat are the two possibilities for Fred’s genotype?BRAIN 10 POINTS ​

Answers

Answer:

11%2F6_ -Amoeba Sisters Video Recap and Practice Problems.docx

Explanation:

#maxmeasabrainliest

In mice, agouti coloration (A) is a dominant trait for fur color over black fur
(aA Punnett square diagram is provided. A particular generation of
offspring has a ratio of three agouti individuals to one black individual.
Which of the following genotype combinations is possible for the parent



A: aa x aa

B: AA x Ar

C:Aa x Aa

D: AA x AA

Answers

Answer:

C. Aa x Aa

Explanation:

According to this question, one gene coding for fur coloration in mice is involved. The allele for agouti coloration (A) is a dominant trait over black fur (a). This means that a heterozygote mouse will have an agouti coloration.

Based on this question, two parents were crossed to produce offsprings that have a ratio of three agouti individuals (3) to one black individual (1). Based on this phenotypic ratio, only parents that are both heterozygous for the fur color gene can produce it. That is, a cross between Aa and Aa mice parent. Hence, the genotype combination of Aa × Aa is possible for the parent to produce offsprings with 3 Agouti : 1 black.

Answer: C) Aa x Aa

I got it right!

what is the effect of the abnormal protein on tissue function in duchenne muscular dystrophy and skeletal muscle tissue?

Answers

Answer:

Lack of the dystrophin protein in muscle cells causes them to be fragile and easily damaged. DMD carriers are females who have a normal dystrophin gene on one X chromosome and an abnormal dystrophin gene on the other X chromosome. Most carriers of DMD do not themselves have signs and symptoms of the disease, but a minority do. Symptoms can range from mild skeletal muscle weakness or cardiac involvement to severe weakness or cardiac effects and can begin in childhood or adulthood.

Explanation:

Identify the biotic factors in the environment

shown. Check all that apply.

Answers

Complete question:

Identify the biotic factors in the environment shown. Check all that apply.

1) people

2) grass

3) rocks in the mountains

4) nylon tent

5) wooden kayak

Answer:

1) people

2) grass

Explanation:

The ecosystem is composed of living and non-living things that interact and depend on each other. These are the biotic and abiotic factors.

Abiotic factors are physical and chemical components of the ecosystem. These are the non-living elements. Biotic factors are all the living components in the ecosystem.  

Biotic and abiotic factors influence the survival and reproduction of living beings. They are related and in constant interaction. If one of these components is removed, the whole ecosystem will change because its equilibrium has been altered.  

Every abiotic component influence organisms and their survival and reproductive rates.

A few examples of the abiotic factors are solar light, minerals, water, air, gases, soil, and humidity.

Examples of biotic factors are plants, animals, insects, microorganisms, etc.

-------------------------------------------------------------------------------------------------------------

The biotic factors of the provided list are:

People, which is a group of individuals composed of cells -which is the basic unit of life-. They grow, reproduce and survive. Grass, as one or many species of vegetables that are also multicellular. They grow, reproduce, and survive.

The abiotic factors are:

Rocks, which are non-living things composed mainly of mineralsTent, which is also a non-living thing, is artificially made by humans.

In my opinion, the wooden kayak is a gray zone, meaning that it might be confusing. A kayak is an abiotic element with no life and is built by men. But it is constructed of wood. The wood originates in trees that are living beings, they are composed of cells, and they used to be alive. However, when talking about the kayak wood, we are referring to dead tissue. It is not alive anymore. Its cells are dead so, their whole system is not working. It is now composed of minerals and other elements with no life, and it has been modified and processed to build the kayak.

So my opinion is that the wooden kayak is an abiotic factor.

Vacuoles are found in plats, animals, and single-celled organisms.
In plants, vacuoles can occupy up to 90% of the cell while in animals, vacuoles are much
smaller and also help store ions and nutrients.
Single-celled organisms that live in aquatic environments like the paramecium, have a
contractive vacuole to maintain homeostasis.
Based on the information given, how does a vacuole help an organism maintain homeostasis?
A. It helps by regulating water amounts within the cell.
B. It helps by keeping a rigid structure at all times,
C. It helps by excreting salt as part of osmosis
D. It helps by controlling the movement of gases into the cell.

Answers

Answer: c

Explanation: because it helps by excreting

In a population of 100 people, 30 have brown hair and 70 have black hair. What is the Relative Frequency for Black hair?

Answers

Answer:

0.7

Explanation:

Given that in statistics, the Relative Frequency is the Frequency of the class divided by Total.

Hence, in this case, the Relative Frequency of black hair is the Frequency of black hair divided by the Total.

Hence, we have 70 ÷ 100

=> 0.7

Therefore, the correct answer is 0.7 Relative frequency.

Order the phases of mitosis. Lesson link: https://k12inc-my.sharepoint.com/:o:/g/personal/jallison_azva_org/ErVbzwNtpQJFq-kBjktQoeIBcHCndieeBRv2QfJ2cQq-YQ?e=aZtiso Question 7 options: Anaphase Prophase Metaphase Telophase

Answers

Answer:

prophase, metaphase, anaphase and telophase

Prophase
Metaphase
Anaphase
Telophase

:)))

4 reasons why we should apply tertiary early​

Answers

Answer:

you stand a better chance of being accepted at tertiary without any hassles.

you'll be able to have better piece of mind.

Which of the following sentences is the best example of formal language?
A. I've gotten totally into theater lately, but opera is too much for me; I
don't know why.
B. When I see one of my acting idols on the screen, I'm like wow,
how'd he do that?
C. I wanted to ask if you wanna come to this thing I'm in on Saturday
night?
D. I would like to extend to you an invitation to my recital, which takes
place this weekend.
SUBMIT

Answers

Answer:

b

Explanation:

......am like wow can be used to someone u are used to

Answer:

The answer is D

Explanation:

just did the test :)

PLS HELP ME IF YOU CAN

Answers

Explanation:

what is the name of this website

or the book?

During normal breathing, what is the usual stimulus for a person to take a breath?

a. a decrease in pH of the cerebrospinal fluid

b. stimulation by norepinephrine

c. PCO2 in the blood drops below 40 mmHg

d. PO2 in the blood drops below 100 mmHg

Answers

Answer:

a

Explanation:

What needs are not being met by a slow-moving or busy line at a school cafeteria? Identify the people, processes, and technologies that play a role in the issue you identified.

Answers

When you work in a School Lunch program, you’re bound to face challenges that pop up seemingly out of nowhere. That’s just the nature of serving hundreds or even thousands of students each day.

But, when you keep encountering the same Child Nutrition program problems, over and over, day after day, it’s likely more than just a coincidence.

Instead, there probably are bigger issues causing these problems.

The bad news is that it often can be unclear what these bigger issues are, which makes fixing them almost impossible.

The good news? We at Harris School Nutrition Solutions have spent thirty years working with the men and women of Child Nutrition programs all across the U.S., helping to diagnose and solve their School Lunch problems.

So, we figured we’d share with you some of the common school lunch-line challenges we’ve seen over the years, the real issues behind those challenges, and of course the solutions to both.

can anyone help me with this question?

Answers

Answer: Organic chemicals can contribute to local and regional losses of freshwater biodiversity and ecosystem services. ... Organic chemicals were likely to exert acute lethal and chronic long-term effects on sensitive fish, invertebrate, or algae species in 14% and 42% of the sites, respectively.

Explanation:

When digested food is absorbed into the blood vessels, it is carried to the rest of the body by the

lymph

white blood cells

lungs

plasma

blood

Answers

The plasma carries nutrients throughout the body to the cells, as well as takes waste products.

Which phylum to not have an internal or external skeleton or shell?

Answers

Explanation:

What is the name of this website

or the book?

do you agreed that cell is a building unit of organism yes explain why?class 9​

Answers

Answer:

It can be, but not really

Explanation:

This is because cells can be the building block of an organism, e.g. humans, but they can also be their own separate organism, such as a bacteria.

Is there an advantage for the different
anole species being able to occupy
different parts of a habitat?

Answers

Hello!

╰˚ ꒰☁️꒱ ʚ‧₊˚˖✦ Is there an advantage for the different anole species being able to occupy different parts of a habitat?

₊˚ʚ꒷꒦˖╰ ˚₊ ₊˚ʚ꒷꒦˖╰ ˚₊ ₊˚ʚ꒷꒦˖╰ ˚₊ ₊˚ʚ꒷꒦˖╰ ˚₊

₊˚ʚ꒷꒦˖╰ ˚ ₊˚ʚ꒷꒦˖╰ ˚₊ ₊˚ʚ꒷꒦˖╰ ˚₊ ₊˚ʚ꒷꒦˖╰ ˚₊

First...

⭐What are anoles?

Anoles are a genus of lizards native to the Caribbean, Central and South America. As some species can change color they have been called chameleons of America. There are 425 species according to the latest research.

♡୨୧┈┈୨୧♡୨୧┈┈୨୧♡୨୧┈┈୨୧♡୨୧┈┈୨୧♡୨୧┈┈୨୧♡୨୧┈┈୨୧♡୨୧┈┈୨୧♡୨୧┈┈୨୧♡୨୧┈┈୨୧ ♡୨୧┈┈୨୧♡

Is there an advantage for the different anole species being able to occupy different parts of a habitat?

Yes, since the Anolis sagrei inhabits humid lowland forests and dry lowland forests. Apparently it prefers areas that have very low or little ground cover (18, 23).The green anole lizard, Anolis carolinensis, has adapted to living in the tree canopy and can lead to speciation, Different species of anoles have different dewlaps, and very different vegetation.

I hope I've helped :D

Greetings

atte:

Ángela

❤️

(No links)
Which is NOT a characteristic of unsaturated fats?
A. liquid at room temperature
B. animal fats
C. kinks in the carbon chain
D. not fully saturated with hydrogens​

Answers

Answer:

C

Explanation:

the answer is C
because if you search up the characteristics of unsaturated fats c is not one of them
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