EDTA is commonly used in foods and cleaning products. It is also used in police laboratories to prevent the degradation of samples. Explain two ways this might serve as a problem in a trial involving DNA evidence.
Answer:
EDTA is a chelating agent used to preserve samples for DNA extraction and as an anticoagulant
Explanation:
Ethylenediaminetetraacetic acid (EDTA) is a well-known chelating agent that binds metal ions (iron and calcium ions). In police cases, EDTA can be used for DNA extraction since this agent chelates metal ions in DNase enzymes which are contained in the samples, thereby reducing their activity and preserving DNA samples for a long time. Moreover, EDTA is also used as an anticoagulant for blood cells, which allows preserving the cellular components and the morphology of blood samples.
2. What social issues affected the problem or its solution in each of the stories?
for conservation in each stories
"Using forests wisely"
"Community conservation"
Answer:
Social issues such as poverty and to fulfill basic needs etc.
Explanation:
Social issues such as poverty, lack of awareness and to fulfill basic needs etc affected the problem or its solution in the stories i.e. "Using forests wisely" and "Community conservation" because these issues forced people to cut the forest and use the lands unwisely to fulfill their basic needs and betters their social status in the society. Due to poverty, people cut the trees in the forest and sold them to earn money in order to buy food and other necessary items for their family. If these social issues are solved, there is no need for cutting of trees and land use.
natural selection gizmo answer sheet?
Answer:
Natural selection is the theory that states that if individuals of different genotypes are differently qualified to live and have viable offspring under prevailing conditions, those genes that promote greater fitness must spread at the expense of others. Natural selection is therefore the process that occurs when more capable traits are inherited from one generation to another due to the interaction between the characteristics of the organism and its environment. The first to propose this theory was Charles Darwin.
in 1400, the most advanced naval fleet could be found in
A. China
B. Egypt
C. ireland
D. polynesia
Define the actual distance of the span of the Milky Way galaxy
Natural Selection & Speciation:Question 1 A species of lizard has been studied on one of the isolated Galapagos Islands for many years. Since the island is small, the lineage of every lizard for several generations is known. Some groups of lizards have survived and others have died out. The groups that survive probably have
Explanation:
Manged to utilize their adaptive features well and hence survived the competition
Giving 10 points away please help me with this question ASAP!!!!
Which body system transports the hormones that control the menstrual cycle?
Answer:
The hormone responsible for these changes is progesterone, which is manufactured by the corpus luteum. Under the influence of progesterone, the uterus begins to create a highly vascularized bed for a fertilized egg. If a pregnancy occurs, the corpus luteum produces progesterone until about 10 weeks gestation.
Which of the following is the best definition of Newton's theory of universal gravitation?
Every object is pulled downward with a force that increases as the height from which an object is dropped increases.
Every object is attracted to the Earth with a force that increases with increasing mass and distance.
Every object attracts every other object in the universe, with a force that increases as the objects' masses decrease and the distance between them increases.
Every object attracts every other object in the universe, with a force that increases as the objects' masses increase and the distance between them decreases.
the answer would be D!;
every object attracts every other object in the universe, with a force that increases as the objects' masses increase and the distance between them decreases.
The definition of Newton's theory of universal gravitation is : ( D )
Every object attracts every other object in the universe, with a force that increases as the objects' masses increase and the distance between them decreases.
Newton's theory of universal gravitation states that "every object attracts every other object in the universe with an attracting force that is proportional to the product of their masses and is inversely proportional to the square of their distances "
Therefore based on the Newton's theory of universal gravitation the best definition from the options given above is Every object attracts every other object in the universe, with a force that increases as the objects' masses increase and the distance between them decreases.
Hence we can conclude that Every object attracts every other object in the universe, with a force that increases as the objects' masses increase and the distance between them decreases.
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What is the relationship between genetic mutations and DNA?
Answer:
Change in DNA sequence leads to genetic mutation.
Explanation:
A mutation is a change in DNA. The organisms DNA can affect the way it looks in the future and can cause changes in the aspects of that organisms life. Mutation is quite crucial to evolution and is the raw material of genetic variation. The way the DNA functions can affect the mutation.
what produces a unstable form of energy for the cell
Answer:
In both animal and plant cells. ... Only in plant cells. Mitochondria. Produces a usable form of energy for the cell.
Which organelles are usually found in both plant and animal cells? A.cell walls B. centrioles C. mitochondria D. chloroplasts
Answer:
C.
Explanation:
Both cells are eukaryotic
Since they are prokaryote cells, they do not have
or ______
a _____
Answer:
They don't have nucleus or they have distinct nucleus
Answer:
1.) membrane-bound organelles
2.) a nucleus
Explanation:
please help me please will give brainliest
Answer:
9. C
10. D
11. B (Im not sure about this one but I think its right)
12. Cant see 12
13. C
14. D
Explanation:
What might happen to the owl population if there were less rabbits, mice, and snakes in a given year
Owls prey on rabbits, mice, and snakes so a decrease in their population would decrease the population of owls.
What is the food chain?
A food chain describes which creature in the ecosystem consumes another. The food chain is a succession of living things that transmit nutrients and energy from one creature to the next. When one organism ingests another, this happens. Following the chain, starts with the producer organism and finishes with the decomposer organism.
The sequence of events in an ecosystem known as a "food chain" occurs when one live organism consumes another organism, which is then eaten by a bigger organism. A food chain is created by the transfer of nutrients and energy from one creature to another at various trophic levels.
The feeding habits or connections between living things are also explained by the food chain. Trophic level is the term used to describe the orderly phases in a food chain, from producers at the bottom through primary, secondary, and tertiary consumers. A trophic level is any position along a food chain.
Therefore, the owl population would decrease if their prey's population decreased.
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The main function of the human digestive system is to *
a. Rid the body of cellular waste materials
b. Process organic molecules so they can enter cells
c. Break down glucose in order to release energy
d. Change amino acids into proteins and carbohydrates
need help explaining asap please :(
Different types of selection may occur within a species in response to environmental change. Which of the following would provide evidence that stabilizing selection is occurring in response to environmental conditions?
A shift in a population's frequency curve from an intermediate phenotype to an extreme phenotype
A shift toward equal distribution of all phenotype frequencies, including intermediate and extreme phenotypes
An increase in the frequency of extreme phenotypes and a decrease in the frequency of intermediate phenotypes
An increase in the frequency of intermediate phenotypes and a decrease in the frequency of extreme phenotypes
An increase in the frequency of intermediate phenotypes and a decrease in the frequency of extreme phenotypes favors stabilizing selection. Therefore, the correct statement is option D.
What is stabilizing selection?Stabilizing selection is a natural selection favoring intermediate phenotypes over extreme phenotypes. When the environment is stable, individuals with intermediate traits will be more fit than those with extreme traits.
Individuals with intermediate phenotypes have high chances of survival due to stabilizing selection, resulting in an increase in the frequency of intermediate phenotypes and frequency of extreme phenotypes decreases.
Stabilizing selection results in reduction of the genetic variation within a population, as extreme phenotypes are less likely to survive. The reduction in genetic variation results in more homogeneous population.
Therefore, an increase in the frequency of intermediate phenotypes and a decrease in the frequency of extreme phenotypes is a type of stabilizing selection.
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How many chromosomes do people with DMD have?
Answer:
I think it's two x chromosomes.
which properties of life are displayed by a virus
Answer:
Living characteristics of viruses include the ability to reproduce, but only in living host cells, and the ability to mutate. They can also only reproduce inside the host cell and they do have DNA or RNA.
Explanation:
The law that states that the force of gravity acts between all objects in the universe that have mass is
Answer:
The Law of Universal Gravitation states that the force of gravity acts between all objects in the universe.
i hope this is right
Recombinant DNA technology involves which sequence of steps?
Answer:
B
Explanation:
Processes of recombinant DNA technology involve isolation of DNA of the desired DNA fragment. In order to cut the DNA with restriction enzymes, it needs to be in pure form, free from other macromolecules. The DNA is enclosed within the membranes, we have to break the cell open to release DNA along with other macromolecules such as RNA, proteins, polysaccharides, and also lipids. This can be achieved by treating the bacterial cells/plant or animal tissue with enzymes such as lysozyme (bacteria), cellulase (plant cells), chitinase (fungus). The RNA can be removed by treatment with ribonuclease whereas proteins can be removed by treatment with protease.
Urgent!!
Genetically, a seed represents both male and female parent.
True
False
Answer:
True
Explanation:
Answer:
false
Explanation:
rep female
tru or false
Do plants lose water
Answer:
True is the answer of the question
Answer:
True they lose water by the process of Transpiration.
Explanation:
Hope this helped :)
If a molecule has one side more negative and one side more positive it is said to have a dipole and be polar. Which molecule has equal charge all the
way around, does not have a dipole, and is non-polar.
A. NaCl
B. HCI
C. CI2
please lmk thank you:)
Answer:
small earthquakes are very common. many happen everyday
Many kinds of data can be gathered in the study of ocean water. Predictions are based on accurate and precise scientific data. Which of these sets of data will yield the most precise data?
Hello. You did not present the answer options, which makes it impossible for this question to be answered accurately. However, I will try to help you in the best possible way.
The data set that will produce the most accurate data are the most specific and least general data, which have very specific characteristics and circumstances on the ocean water. An example of very specific data is the water temperature, where researchers will be able to interpret accurately and promote accurate data.
Which gas is most prevalent in the Earth's atmosphere?
Nitrogen
Oxygen
Argon
Carbon dioxide
Answer:
Nitrogen
Explanation:
The atmosphere contains many gases. The most abundant gas in the atmosphere is nitrogen and oxygen second. Argon is a insert gas which makes it the third most abundant gas in the atmosphere.
What common idea about organisms did the early naturalists share
identify the products of what process are shown in the figure below
DNA is created by the DNA polymerase and unzipped by the DNA helicase.
What is DNA?DNA stands for deoxyribonucleic acid.
DNA is defined as a collection of molecules that are in charge of transporting and passing genetic information from parents to children.
It can also be defined as a sophisticated molecule that carries all the data required to create and maintain a creature.
There are basically two types of DNA.
Autosomal DNAMitochondrial DNAToday, DNA serves three unique purposes: genetic, immunological, and structural, all of which depend in different ways on the sugar phosphate backbone and the bases.
Replication, information encoding, mutation/recombination, and gene expression are the four functions that DNA performs.
Thus, DNA is created by the DNA polymerase and unzipped by the DNA helicase.
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QUESTION 6
What do red blood cells do?
Answer: Red blood cells carry oxygen from the lungs to the other parts of the body.
Explanation:
Answer:
red cells contain a special protein called hemoglobin, which helps carry oxygen from the lungs to the rest of the body and then returns carbon dioxide from the body to the lungs so it can be exhaled.
Explanation: