The number of crayfish in a pond is known as the of crayfish. O A. species O B. population count O C. group OD. community​

DNA technology is especially useful in detecting and treating human diseases that are genetic in nature.

What is DNA technology?

DNA technology is a set of techniques used to study and manipulate DNA, the genetic material found in all living organisms. DNA technology has enabled the detection and treatment of human diseases that are genetic in nature.

How is DNA technology useful in detecting human diseases?

Genetic diseases can be caused by changes in DNA sequences or mutations in a single gene. DNA technology can detect these mutations through genetic testing and gene sequencing.

For instance, diseases like cystic fibrosis and sickle cell anemia can be detected using DNA technology.

How is DNA technology useful in treating human diseases?

DNA technology can also be used to treat genetic diseases. One way this is done is through gene therapy. Gene therapy is a process of replacing, modifying, or supplementing the non-functioning gene with a functional one.

By using gene therapy, the root cause of the genetic disease is addressed rather than just treating the symptoms.

Summary, DNA technology is especially useful in detecting and treating human diseases that are genetic in nature. DNA technology is used to detect mutations in genes that cause genetic diseases. Gene therapy is a technique used to treat genetic diseases by replacing, modifying, or supplementing non-functioning genes with functional ones.

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rate 5 stars~ and give thanks for more po! welcome!

Explanation:

a. According to the Hardy-Weinberg law, the frequency of the recessive allele (q) can be calculated as the square root of the frequency of the homozygous recessive genotype (aa). Given that 4% of the population is albino (aa), the frequency of aa = 0.04, and the frequency of q = sqrt(0.04) = 0.2. The frequency of the dominant allele (p) is then 1 - q = 0.8. Therefore, the expected percentage of heterozygotes (Aa) can be calculated as 2pq = 2 × 0.8 × 0.2 = 0.32, or 32%.

b. To predict the percentage of albinos in the population in 100 years' time, we need to make certain assumptions, such as the maintenance of the same conditions that allow the Hardy-Weinberg equilibrium to be applicable. This includes the absence of mutations, gene flow, genetic drift, and natural selection. Under these assumptions, the allele frequencies remain constant from generation to generation, and the predicted frequency of the aa genotype (albinos) would be q^2 = 0.2^2 = 0.04, or 4%. Therefore, the percentage of albinos in the population would remain constant at 4%.

c. The Hardy-Weinberg equation applies under certain conditions, which are rarely met in real populations. These include random mating, large population size, absence of mutations, gene flow, genetic drift, and natural selection. Violation of these conditions can lead to changes in allele frequencies and departure from the equilibrium. Therefore, the Hardy-Weinberg law is a useful theoretical tool for understanding the genetic structure of populations, but it has limited practical applications in real-world scenarios.

The given statement about placenta “It helps combat internal infection and gives the unborn child immunity to various diseases.” is true, because the placenta is the path by which maternal antibodies reach their offspring.

During pregnancy, the uterus becomes the site of the development of a new organ known as the placenta. A developing newborn receives oxygen and nutrients from this structure. It also cleans the baby's blood of waste materials. The baby's umbilical cord grows from the placenta, which is attached to the uterus' wall throughout pregnancy.

The primary role of the placenta is to facilitate the diffusion of nutrients and oxygen from the blood of the mother to the blood of the developing fetus through the chorion, as well as the diffusion of waste products from the fetus into the blood of the mother.

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Answer:

The answer is Force.

Explanation:

Force is a push or push of a particular directions with a particular object.

The Green Revolution was characterized by C increased yields by providing large improvements in the food production sector.

Large improvements in food production in developing nations were a hallmark of the “green revolution,” which was brought on by increasing use of herbicides, fertilizers, and different crop varieties.

The introduction of new, high-yielding cultivars into developing countries, which started in the middle of the 20th century with Borlaug’s work, had a significant role in the Green Revolution’s increased the production of different kind of food grains (particularly wheat and rice).

The green revolution boosted the availability and use of fertilizers, weedicides, and insecticides to increase farm output and minimize crop loss or damage.

With the development of commercial farming, it also assisted in promoting agriculture throughout the nation.

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Answer:

energy

Explanation:

Atp is the powerhouse of the cell.

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Answer:

energy

Explanation:

The environmental group is most closely associated with mountain climbing, backpacking is Sierra Club, option (C) is correct.

The Sierra Club is most closely associated with mountain climbing, backpacking, and camping. Founded in 1892, the Sierra Club is one of the oldest and largest environmental organizations in the United States. It has a long history of promoting outdoor recreational activities and conservation efforts in natural landscapes, particularly in mountainous regions.

The club's members and supporters actively engage in activities such as hiking, backpacking, and camping, often in environmentally sensitive areas. The Sierra Club advocates for the protection of wilderness areas, preservation of ecosystems, and sustainable outdoor recreation practices. Through its outings programs and conservation campaigns, the Sierra Club encourages people to connect with nature, experience the beauty of mountains, and develop a sense of stewardship towards the environment, option (C) is correct.

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Answer:

GPS and GIS help in data collection and guide about geographical distribution.

Explanation:

Answer:

Here is the matching of the types of boundaries with their characteristics:

B. Convergent - Near subduction zones

C. Divergent - Tension

A. Transform - Shearing

Answer:

C. cytokinesis has formed two new cells.

Explanation:

Cell cycle has different stages called G1, S, G2, and M. ... This is where the cell actually partitions the two copies of the genetic material into the two daughter cells. After M phase completes, cell division occurs and two cells are left, and the cell cycle can begin again.

Answer:

Which fossils are found in different layers of sedimentary rock?

Explanation:

Thats the answer i hope it helped! :)

Answer:

Which fossils are found in different layers of sedimentary rock?

Explanation:

Which fossils are found in different layers of sedimentary rock?

The frequency of the r allele in the population, based on the given data and assuming Hardy-Weinberg equilibrium, is 0.1786.

In a population in Hardy-Weinberg equilibrium, the allele frequencies remain constant from generation to generation. In this case, we can determine the frequency of the r allele by considering the frequency of the nonrollers (rr genotype) in the population.

Given that there are 20 nonrollers in a class of genetics students, we can assume that these individuals are homozygous for the r allele (rr genotype). This means that the frequency of the rr genotype is 20/128 (total number of individuals in the class, obtained by adding rollers and nonrollers).

Since the r allele is recessive, the frequency of the rr genotype corresponds to the frequency of the r allele squared (q^2) in the population. Therefore, we can solve for the frequency of the r allele (q) by taking the square root of the frequency of the rr genotype.

Taking the square root of 20/128, we find that the frequency of the r allele (q) is approximately 0.1786. Thus, the frequency of the r allele is 0.1786 or 17.86% in this population.

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Explanation:

Rock fragments squeeze together

Answer:

Hydrolysis

Explanation:

Answer:

Boiling water

Explanation:

Boiling water is an example of physical change as it does not cause any change in the chemical composition of water.

Physical changes are defined as changes which affect only the form of a substance but not it's chemical composition. They are used to separate mixtures in to chemical components but cannot be used to separate compounds to simpler compounds.

Physical changes are always reversible using physical means and involve a change in the physical properties.Examples of physical changes include melting,boiling , change in texture, size,color,volume and density.Magnetism, crystallization, formation of alloys are all reversible and hence physical changes.

They involve only rearrangement of atoms and are often characterized to be changes which are reversible.

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The trochlear nerve conveys proprioceptor impulses from the superior oblique muscle to the brain.

The trochlear nerve, also known as cranial nerve IV, is responsible for innervating the superior oblique muscle of the eye. The superior oblique muscle is involved in eye movement, specifically downward and outward rotation of the eye. It is one of the extraocular muscles that control the positioning and movement of the eyes.

Proprioceptors are specialized sensory receptors that provide information about the position, movement, and tension of muscles and joints. The trochlear nerve carries proprioceptive impulses from the superior oblique muscle, relaying information about its length, tension, and position back to the brain.

This proprioceptive feedback is essential for coordinating eye movements and maintaining visual stability. It allows the brain to accurately perceive the position and movement of the eyes in relation to the external environment.

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Answer:

Self-pollination occurs when the pollen from the anther is deposited on the stigma of the same flower or another flower on the same plant. Cross-pollination is the transfer of pollen from the anther of one flower to the stigma of another flower on a different individual of the same species.

"The Story of Stuff" by Annie Leonard is a 20-minute animated documentary that explains the environmental and social impacts of our production and consumption patterns. Here are some answers based on the video:

Answer-1:

The sketches of the five degrees of the substances economic system are:

Extraction: A photograph of a globe with a massive hollow in it and a sign that says “No greater”.

Production: A photograph of a manufacturing unit with smokestacks and a signal that announces “Toxics in”.

Distribution: A photo of a truck with bins and a sign that announces “$$$”.

Consumption: A photograph of a buying cart with stuff and a sign that asserts “Shop 'til you drop”.

Disposal: A photo of a landfill with trash and a sign that says “Away”.

Answer-2:

According to the video, we've got trashed 80% of our natural resources within the previous couple of many years.

Answer-3:

The video says that if everybody fed on at U.S. Costs, we might need three to 5 planets to help present-day rates of consumption.

Answer-4:

The video claims that we're losing 2000 timber inside the Amazon every minute.

Answer-5:

The video mentions that over 100,000 artificial chemical compounds are in use today, many of that are poisonous or carcinogenic.

Answer-6:

The video says that one food that is at the top of the food chain and perilous to the health of Destiny generations is fish.

Answer-7:

The video defines “externalizing fees of manufacturing” as shifting the fees from the producer to someone else, such as workers, consumers, groups, or the environment.

Answer-8:

The video suggests that some groups which are buying the real value of the cheap electronic devices (i.E. The $4.99 radio) are:

The employees lead them to sweatshops with low wages and poor conditions.

The groups in which the factories are placed, suffer from pollutants and fitness troubles.

The individuals who stay near the landfills or incinerators in which the digital waste is dumped or burned face poisonous exposure and environmental degradation.

Answer-9a:

The video states that the simplest 1% of the fabric remains in the gadget after 6 months.

Answer-9b:

The ultimate materials have long gone to landfills, incinerators, or oceans, where they purpose pollution and harm wildlife.

Answer-10:

The video argues that the contemporary customer economic system got here into being after World War II, whilst factories had to hold producing goods and those needed to maintain shopping for them to maintain financial increase. The video cites Victor Lebow, a retail analyst, who stated in 1955: “Our enormously effective financial system demands that we make intake our way of existence, that we convert the shopping for and use of goods into rituals, that we are looking for our religious satisfactions, our ego satisfactions, in consumption.”

Answer-11:

According to Annie Leonard, some of the social and network hobbies being unnoticed while we are busy eating “stuff” are:

Our time: We work longer hours to shop for greater stuff, but have much less time for ourselves and our families.

Our fitness: We face extra stress, weight problems, depression, and chronic diseases because of our existence and environments.

Our relationships: We value material possessions greater than human connections, and lose our experience of network and belonging.

Our democracy: We end up passive purchasers as opposed to active residents, and allow agencies and governments to make selections for us.

Answer-12:

The phrases imply:

“Planned obsolescence”: Designing products to break or turn out to be previous fast in order that people have to shop for new ones.

For instance: Making mild bulbs that burn out after 1000 hours instead of 2500 hours.

“Perceived obsolescence”: Convincing human beings that they need to buy new products even when their antique ones nonetheless work fine.

For instance: Changing fashion developments each season or creating new fashions of telephones every year.

Answer-13a:

The video indicates a graph that indicates that the ranges of measured happiness have been declining since the Fifties.

Answer-13b:

Some motives given are:

We have extra stuff but less pride.

We have extra debt and a lack of confidence.

We have extra isolation and loneliness.

We have greater environmental and social troubles.

Answer-14:

The steps within the treadmill are:

Work difficult

Earn cash

Buy stuff

Throw away stuff

Repeat

Answer-15:

One problem associated with burning rubbish is that it releases greenhouse gases and other pollution into the atmosphere, contributing to climate change and fitness troubles.

Answer-16:

Recycling allows by:

Reducing waste

Saving electricity

Conserving resources

Preventing pollution

Answer-17:

Recycling is not sufficient due to the fact:

It no longer copes with the foundation reasons of overconsumption and overproduction.

It does now not cast off all waste or pollution.

It requires extra boxes than one bin of recycled substances (the video suggests 10 containers).

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Answer:

Cells are the basic structur of all living organisms

Explanation:

i was told

Answer:

Cells are so important in organisms because cells are the basic structures of all living organisms. They also provide nutrient for organisms and take energy from the cells.

The chromosomes resulting from the described cutting and resolution are nonrecombinant and carry the combinations A1 and B1 or A2 and B2. Option D is the correct answer.

In the given scenario, one homolog carries the A1 B1 alleles for genes A and B, while the other homolog carries the A2 B2 alleles. After the cutting of the Holliday junction region, the resulting chromosomes are resolved by an NS (non-sister) cut. This means that the chromosomes are not swapped or recombined between the alleles. As a result, the chromosomes remain nonrecombinant and carry the original combinations of A1 and B1 or A2 and B2. Therefore, the answer is nonrecombinant and carry the combinations A1 and B1 or A2 and B2 (Option D).

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The dominant allele P is accountable for the crimson kernel colour, and the recessive genotype pp is liable for the crimson kernel colour. The recessive allele is p the phenotypic ratio is 9:3:3:1.

I is the dominant allele that inhibits the kernel colour, and that i is the recessive allele that lets in the kernel colour. The genotype of the dad and mom heterozygous for each loci could be IiPp. Punnet rectangular and the genotype of the offspring producedThe gametes produced via way of means of the offspring are IP, Ip, iP, and ip.

The offspring with genotype IIPP, IIPp, IiPP, IiPp, IIPp, IiPP, IIpp, IiPp, Iipp, IiPp, Iipp, and IiPp don't have any coloured kernels. It is because of the presence of dominant allele I in every of those offspring that inhibits kernel colour.

Phenotype ratios of the offspringOut of the 16 feasible genotypes, the dominant allele I masks the pp locus's effect, main to the formation of the colorless kernel for 3 offspring (pp).

Nine offspring (IP) can have white kernel. The crimson kernels are fashioned in 3 offspring (iiP), and the crimson kernel is advanced in a single offspring (iipp). Thus, the phenotypic ratio of the heterozygous crossing of the corn plant is 9:3:3:1.

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The force that caused the rubber blue ball to roll down the ramp is gravity. When Kendrick held the ball halfway up the ramp and then released it, the force of gravity began to act on the ball and it started to roll down the ramp.

A ramp is an inclined plane that reduces the amount of force required to move an object to a higher level. The force of gravity, which is an attractive force between any two objects in the universe, acts on objects in the direction of the center of the Earth.

This force causes objects to fall toward the ground. When the rubber blue ball was released from the midpoint of the ramp, it began to move in the direction of the force of gravity, which caused it to roll down the ramp. The force of gravity was able to overcome the ball's inertia and caused it to accelerate down the ramp. Once the ball rolled off the end of the ramp, it continued to move forward due to its inertia.

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Answer:

Explanation: Base is the lowest part or edge of something, especially the part on which it rests or is supported. Acid salts are a class of salts that produce an acidic solution after being dissolved in a solvent. Its formation as a substance has a greater electrical conductivity than that of the pure solvent.

Answer: B. The pituitary gland.

Explanation:

There are three glands of the endocrine system that are located in your brain; the hypothalamus, the pineal gland, and the pituitary gland.

By looking at any diagram on the internet, you can clearly see that the pituitary gland is located near the ear on the side of your head.

I linked a diagram for more clarification.

Hope this helped!

Answer: The pituitary gland

Answer:

Acute diseases refer to the medical condition that occurs suddenly and lasts for a shorter period of time. Chronic diseases develop slowly in our body and may last for a lifetime. Chronic diseases are sometimes fatal.

Answer:

Well, here is your answer...

Explanation:

I am really sorry because I have to search other website for answering this question because I am not in the same grade which you are in... SORRY DEAR !!!

Answer:

c

Explanation:

C. greater differences between niches.

A greater difference between niches results in less direct competition for resources. When species occupy different niches, their roles in the environment do not overlap significantly, and they can coexist with less interspecific competition. In contrast, if species have similar niches, they are in direct competition with each other, leading to reduced population sizes and potential extinction.

Different reproductive habits of species and greater day/night temperature differences have no direct effect on competition.

Answer:

Sometimes known as glycans, there are three common and principal types of polysaccharide, cellulose, starch and glycogen, all made by joining together molecules of glucose in different ways. It has been estimated that 50% of the world's organic carbon is found in one molecule; cellulose.

Lipids have limited solubility in water but dissolve freely in organic solvents.

Lipids are a class of compounds primarily composed of nonpolar groups. Nonpolar molecules are generally hydrophobic, meaning they have limited solubility in water, which is a polar solvent. This limited solubility occurs because water molecules are polar, with a partial positive charge on the hydrogen atom and a partial negative charge on the oxygen atom. Since lipids lack a charge and possess nonpolar regions, they do not easily mix with water.

On the other hand, lipids readily dissolve in organic solvents such as ether, chloroform, or benzene. Organic solvents are typically nonpolar or have low polarity, allowing them to interact effectively with the nonpolar groups in lipids.

The nonpolar regions of lipids align with the nonpolar solvents, facilitating their dissolution and resulting in a homogenous mixture. This property of lipids to dissolve in organic solvents is important for various biological processes, such as lipid extraction, isolation, and analysis in laboratories.

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Answer:

Phanerograms (Phanerogramae)

Explanation:

The seed bearing plants can be classified into two groups: Gymosperms and Angiosperms. The gymnosperms generally have hidden seed and angiosperms have special reproductive organs like flowers. They also show double fertilization and triple fusion.