Researchers want to use eDNA to look for an invasive species in a waterway.
Which of these steps would they be likely to do last?

A. Sort DNA into bands on a gel.
B. Cut DNA into smaller pieces.
C. Collect samples of water with DNA.
D. Compare DNA samples with a control.

Answers

Answer 1
Researchers should first collect samples of water. Explanation: eDNA or environmental DNA is a technique that allows us to find DNA from the environment, rather than collecting living organisms. In this case, for analysis of species in a waterway we need to collect water first to later do the laboratory work.

Related Questions

Please help I’ll put max points

Answers

answer ::::::::: there u go

Answer:

other answer

Explanation:

what happens to waste material in surface mining?

Answers

Answer:

Your answer is that mining activities increase the volume and rate of exposure of sulfur-containing rocks to air and water, creating sulfuric acid and dissolved iron. This acid run-off dissolves heavy metals such as copper, lead and mercury which leach into ground water aquifers and surface water sources, harming humans and wildlife

what is a niche I'm confused​

Answers

Answer:

the role an organism plays in a community

Answer:

a comfortable or suitable position in life or employment

Would a volcanic eruption affect Earth’s climate?Justify your response.

Answers

Answer:

Explanation:

The gases and dust particles thrown into the atmosphere during volcanic eruptions have influences on climate. Most of the particles spewed from volcanoes cool the planet by shading incoming solar radiation. The cooling effect can last for months to years depending on the characteristics of the eruption.

Choking on food is most likely caused by an interference with the proper functioning of the...

Answers

Answer:

esophagus

Explanation:

the esophagus is the pipe/muscle that leads to your stomach

Choking on food is most likely caused by an interference with the proper functioning of the oesophagus.

What is oesophagus?

The digestive system, sometimes known as the gastro-intestinal tract, includes the oesophagus (gullet) (GI tract). An oesophageal tube is made of muscles. It joins the mouth with the stomach.

The oesophageal walls contract together as you swallow food (contract). This causes the food to travel from the mouth to the stomach.

The diaphragm is a layer of muscle located below your lungs. It facilitates breathing. The majority of your oesophagus is located in your chest above the diaphragm.

Therefore, Choking on food is most likely caused by an interference with the proper functioning of the oesophagus.

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SPHERE Why do you think each of these systems includes the word "sphere"? ​

Answers

Answer:

Because the "-spheres" are literally presented as spheres.

Explanation:

If you think about the atmosphere, its literally just a huge ball of the air around you. Same with hydrosphere, biosphere, etc. (It's just a ball of whatever is categorized in that sphere.)

Planet Earth is made up of four overlapping subsystems that contain all of world’s land masses, water sources, living organisms, and gases. These four subsystems are known as spheres.

Geographers break down the Earth’s systems into four spheres that make up the world’s air (atmosphere), water (hydrosphere), land (geosphere), and living organisms (biosphere).

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If Mr. and Mrs. Weasley are a wizard and a witch, what are their genotypes?

Answers

They are both witches: it’s either WW or ww

If a plant closes its stomata, this means *
it will become turgid
it loses water by transpiration
it can take in more oxygen for respiration
it cannot take in carbon dioxide for photosynthesis

Answers

it cannot take in carbon dioxide for photosynthesis

What does this diagram represent?
A)DNA
B) RNA
C) a gene
D) an allele

Answers

A) DNA


DNA is double stranded
that is DNA, RNA is one strand of dna and wont intertwine like DNA

The diagram shows a food web,
Mountain
lion
Deer
Hawk
Fox
Rabbit
Owl
Snake
Green
plant
Mouse
What is most likely to happen if the snake population is
wiped out?

Answers

Answer:

owl will decrease and mouse will increase

Answer:

the snake population will decrease. for a p e x

7. Why is it so unlikely for a girl to get a disorder like Duchenne Muscular Dystrophy

Answers

Answer:

Because it takes a very long time and an interesting mindset.

Explanation:

People don't really have an explanation for the things that we do they just suddenly build up inside us

Answer:

This is because the mutated gene responsible for Duchenne is located in the X chromosome. Girls have two X chromosomes, meaning that the body usually inactivates the chromosome that carries the mutation. The female will carry the mutation, but manifest little to no symptoms of the disease.

Explanation:

I hope that this helped you ;)

In a grassland ecosystem, a prolonged drought has caused depletion in food sources for a species of rabbit. Which of the following would allow for the population of rabbits to recover from the drought?

Genetically diverse population, with some rabbits able to survive with fewer water resources than usual

The population of rabbits must reduce its rate of reproduction to produce only the most fit offspring

Individuals of the rabbit population should have less genetic diversity to become more similar and evolve in the same direction

Individuals of the rabbit population must develop traits that make them better adapted to fewer water resources

Answers

Answer:

Genetically diverse population, with some rabbits able to survive with fewer water resources than usual

Explanation:

I took the quiz and got that answer

((GIVING BRAINLIEST)) THIS IS BABY WORK...
What is a water reservoir?

A dam that blocks water
A place in the middle of the ocean
A place where water is collected
A small container

Answers

Answer:

A water reservoir is an artificial lake where water is stored, so the closest would be C.

Answer:

c

Explanation:

what element has a charge of -2 when bonding? on the periodic table

Answers

Answer: Oxygen has a charge of -2 when bonding

What is pyruvic acid changed into? alcohol fermentation

Answers

Carbon Dioxide + Ethenol + Energy

30 g of ammonia nitrate and nitrite are added to a soil sample. Predict whether these concentrations would increase decrease or stay the same if ammonia nitrifying bacteria were added to the sample 30 g of ammonia nitrate and nitrite are added to a soil sample. Predict whether these concentrations would increase decrease or stay the same if ammonia nitrifying bacteria were added to the sample

Answers

Answer:

See explanation

Explanation:

Nitrifying bacteria convert the most reduced form of soil nitrogen, ammonia, into its most oxidized form, nitrate(Science direct).

Nitrifying bacteria converts ammonia to nitites and finally to nitrates in the soil.

Hence, when 30 g of ammonia, nitrate and nitrite are added to a soil sample in the presence of nitrifying bacteria; the concentration of ammonia decreases over time while the concentration of nitrite and nitrate increases over time.

ammonia stays the same

nitrates decrease

nitrates increase

In what respect is a mycelium and a fruiting body similar?
Both are made of hyphae.
Both are found above the ground.
Both produce reproductive spores.
Both absorb nutrients underground.

Answers

Both are made of hyphae.

Both produce reproductive spores. Therefore, option (C) is correct.

What are  reproductive spores?

Reproductive spores are specialized structures produced by certain organisms for the purpose of reproduction. Spores are single cells or groups of cells that are capable of developing into new individuals under suitable conditions. They are typically small, lightweight, and highly resistant to environmental conditions, allowing them to disperse over long distances.

Various organisms produce reproductive spores, including fungi, algae, plants (such as mosses and ferns), and some bacteria. These spores serve as a means of reproduction and dispersal, enabling these organisms to colonize new habitats and propagate their species.

Reproductive spores can be produced through different mechanisms, such as asexual or sexual reproduction. In some cases, spores are released into the surrounding environment and can be carried by wind, water, or other organisms, allowing for widespread distribution and colonization.

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Most membrane-enclosed

organelles, including the

nucleus, ER and Golgi, probably

originated from deep folds in

the

Answers

Answer: Plasma membrane

Explanation:

According to endosymbiont theory most of the membrane bound cell organelles like nucleus, Golgi bodies, and endoplasmic reticulum are originated from plasma membrane in the deep folds. This theory also suggests that chloroplast and mitochondria are originated from the bacterial cells or primitive prokaryotic cells. These are the organelles chiefly present in the eukaryotic cells. This theory suggests that primitive earth was supported by the bacteria.

The process in which an organism exchanges gases with its environment is known as
O respiration
O precipitation
O transpiration
O evaporation

Answers

The answer is O precipitation B

Answer: the answer is respiration

Your body releases more glucose into your blood during the fight or flight response.
true or false

Answers

Explanation:ture,as the body gets CD the body takes that and gives it to the lungs which than turns the CD into  O2 which makes glucose.

Help biyology teacher

Answers

Answer:

C. P -› F1 -› F2

Explanation:

In genetics and breeding, the following symbols represents the following:

P => parental

F1 => First filial generation

F2 => Second Filial generation

The crossing of two parent plants (P) produces offspring that is tagged the first filial generation (F1). The next cross involving the F1 offspring produced second filial generation (F2).

Therefore, the correct sequence is:

P -› F1 -› F2

One benefit of genetic diversity is that it

Answers

Genetic diversity serves as a way for populations to adapt to changing environments. With more variation, it is more likely that some individuals in a population will possess variations of alleles that are suited for the environment.

Answer:

Explanation:

Genetic diversity is of fundamental importance in the continuity of a species as it provides the necessary adaptation to the prevailing biotic and abiotic environmental conditions, and enables change in the genetic composition to cope with changes in the environment.

please help me anyone wit bio

Answers

Answer: i uasally dont answer real questions but biology is my favorite, its a, interphase

Explanation:

Answer:

D- Anaphase

Explanation:

Stage of mitosis after the process of metaphase, when replicated chromosomes are split and the newly-copied chromosomes.

the graph shows temperature anomalies for earth over a 140-year period. a temperature anomaly is a variation from the average temperature. a positive temperature anomaly indicates a temperature that is higher than average. what conclusion can you draw from the information shown in the the graph?

Answers

Answer:

A

Explanation:

I believe the answer is a because temperatures won't rise because of natural causes they will rise because of human activities. these activities include deforestation farming and oil mining ect

Answer:

its d earth is expiericing global warming

Explanation:

its d

Question 5 of 10
How do mutations in DNA lead to genetic variation within a species?
O A. They increase the rate at which parents can produce offspring.
B. They cause offspring to have the exact same DNA as their
parents.
C. They reduce the amount of time it takes parents to produce
offspring
D. They result in new traits being inherited by offspring from their
parents.
SUBMIT

Answers

Answer:

D

Explanation:

A and C are the same, irrelevent answer. B is the opposite of what the question is asking, and so D is the only acceptable answer.

area of the diagram
ITEM BANK: Move to Bottom
Deer
Bear
Coral reef
Grass
Lobster
Algae
Fish
Oak tree
Frog
human
terrestrial
Both
aquatic
drag and drop answer bere
drag and drop answerber
drag and drop answer here

Answers

aquatic

Lobster

Algae

Fish

Coral reef

terrestrial

Oak tree

Deer

Bear

human

Both

Grass

Frog

Cross two pink snapdragons. What is the genotypic and phenotypic probability of such a cross?

Answers

Answer:

Genotypic probability = 1RR: 2Rr: 1rr

Phenotypic probability = 1Red: 2Pink: 1white

Explanation:

This question involves a single gene coding for skin color in snapdragon plants. The alleles are incompletely dominant over one another and hence, produce an intermediate pink phenotype.

According to this question, two pink/heterozygous snapdragons were crossed i.e. Rr × Rr. Each parent will have gametes R and r. Using these gametes in a punnet square (see attached image), the following proportion of offsprings will be produced:

Genotypic probability = 1RR: 2Rr: 1rr

Phenotypic probability = 1Red: 2Pink: 1white

Which type of clouds are shown?

Answers

Your answer will be the first one

Question #1
Which statement about meiosis is true

Answers

Answer:

A.

Explanation:

The process results in four daughter cells that are haploid, which means they contain half the number of chromosomes of the diploid parent cell. Meiosis has both similarities to and differences from mitosis, which is a cell division process in which a parent cell produces two identical daughter cells.

Which of the following are techniques besides molecular clocks used by scientist to calculate the rate at which a stretch of DNA changes? (Choose all that apply)
•comparison of human behaviors
•carbon dating of fossils
•comparison of blood proteins
•comparison of homologous structures

Answers

Answer:

B and D

Explanation:

Human behaviors do not affect the entire evolution of every lifeform that has existed, therefore, A is FALSE

Carbon dating is commonplace in figuring out how old a lifeform could be, therefore, B is CORRECT

Blood proteins are commonly known to not last long and decompose fast, so fossilization of blood tends to not happen, plus it's next to impossible to tell what species had that genetic data, therefore, C is FALSE

For D, I kinda forgot most of my explanation, but I remember that it's correct, as I got the question correct on the assignment.

The carbon dating of fossils and comparison of homologous structures are techniques besides molecular clocks used by scientist to calculate the rate at which a stretch of DNA changes.

So, option B and D are correct one.

Human behaviors do not affect the entire evolution of life of organism that has existed, therefore, A is FALSE

Carbon dating is commonplace in figuring out how old a life of any organism, therefore, B is CORRECT

Blood proteins are commonly known to not last long and decompose faster, so fossilization of blood tends to not happen, plus it's next to impossible to tell what species had that genetic data, therefore, C is FALSE

By comparing of homologous structures we determine nucleotide sequence exchanged between two similar or identical molecule of DNA. So, option D is correct

What is Carbon dating?It is also referred as radiocarbon dating.It is the method used to determine the age of the living organism containing organic( carbon ) based material by using isotopes of carbon which is radioactive.

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