In the family tree below, people with the recessive trait of attached earlobes
are shaded gray.
What must be true about the person labeled "A"?
O
A. It is a female with two dominant alleles.
O
B. It is a female with at least one dominant allele.
O
C. It is a male with at least one dominant allele.
O
D. It is a male with two dominant alleles.

Answer:

78%

Explanation:

The atmosphere is made up 78% of nitrogen and 21% of oxygen

Answer:

78%

Explanation:

The answer will be 78%

Answer:

means when the population in the society is in  equilibrium and the people are at peace and calm with each other and thus they accept their position in the society is called as stable society.

Explanation:

Adequate socialization,social integration is important and are the necessity for building a stable society.

Social institution perform function to ensure stability in a society.

The population in the society should be in a stable condition.

A stable society should be self sustaining.

It should have social institutions such as educational institutes, political institutes, religious institutes, etc.

It should be well organized.

Answer:

A

Explanation:

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The best explanation as to why Kai is not identical to her parents is because their DNA is made of different codon sequences.

When it comes to expressing genes, the information on organisms' DNA sequence is first transcribed as codes into an mRNA. The coded information is then translated as proteins in a process known as protein synthesis.

Thus, for two organisms to be identical, the information on their DNA must be exactly the same. In other words, the codon sequence on their DNAs must be the same. Once there is a variation, different messages would be translated and this will tell as variations on the physical appearances of the organisms.

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Answer:

biosphere

Explanation:

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Hydrosphere interacts with marine life during beach erosion, it is the Earth spheres where all liquid forms are located, hence option D is correct.

It is an Earth sphere that includes all the water content of the planet, which is on the surface, inside the land or in the air.

Beach erosion is the process through which local sea level increases, coastal flooding and strong wave action, have to down or move away rocks, soils, and sands along the coast.

Hydrosphere is located below the atmosphere, thus the seawater has a larger mass than air, it has the higher pressure, in hydrosphere that includes ocean having all marine life.

Therefore, Earth spheres interacts with marine life during beach erosion is hydrosphere, hence option D is correct.

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Answer: b) 25

Explanation: B is a gene for blue feathers and b is a gene for red feathers, the genotype for a heterozygous bird is Bb. A cross between two heterozygous birds will produce 1BB, 2Bb and 1bb. Genotype BB and Bb will manifest outwardly as blue feathers while Bb will manifest as red feathers. Only one out of the four offsprings are red feathered. The percentage of the offsprings that are red feathered is 1/4 x 100 = 25

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When crossing two heterozygous birds (Bb) for feather color, the offspring have a 25% chance of being homozygous recessive (bb) and having red feathers. This is determined by the Punnett square, which predicts the genotypes of the offspring from the parental genes. B)

The question is asking about the probability of offspring with a particular phenotype given the genotypes of the parents. In this case, B represents a gene for blue feathers, which is dominant, and b is a gene for red feathers, which is recessive. When two heterozygous birds (Bb) are crossed, the Punnett square analysis reveals the probabilities for the offspring's genotypes and phenotypes.

Here is how you would set up the Punnett square:

Place one parent's alleles at the top of the Punnett square, B and b.

Place the second parent's alleles on the left side of the Punnett square, B and b.

Fill in the squares by combining the alleles from each parent to predict the potential genotypes of the offspring.

The resulting genotypes of the offspring will be:

BB (blue feathers, because B is dominant)

Two squares of Bb (also blue feathers because B is dominant)

One square of bb (red feathers because there is no dominant B allele present)

Thus, there is a 25% chance that an offspring will have red feathers (genotype bb).

So the correct answer is B, 25% chance for an offspring to have red feathers.

Explanation:

The single-celled eukaryotes consisting of algae having are called dinoflagellates. They are aquatic plankton's comprising of flagella.

Therefore, dinoflagellates thrive in Bahia fosforescente.

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Answer:

Two-thirds of a cell is water, which means that two-thirds of your whole body is water. The rest is a mixture of molecules, mainly proteins, lipids and carbohydrates.

Answer:

Gray

Explanation:

The moon may look like to have a white or yellow colour but detailed photographs of the moon show that it is grey in colour. The grey colour of the moon forms due to the materials which are present in the crust of the moon. Most abundant materials to be found on the crust of the moon are silicon, calcium, oxygen etc. All these colours combine to give the moon its grey colour.

Answer:

A moon is a gray with a tint of seemingly white, since it goes off of the Suns reflection.

Explanation:

Answer:

The respiratory system includes the nose, mouth, throat, voice box, windpipe, and lungs. Air enters the respiratory system through the nose or the mouth. ... The epiglottis (eh-pih-GLAH-tus), a small flap of tissue, covers the air-only passage when we swallow, keeping food and liquid from going into the lungs.

Explanation:

Answer:

digestive and respiratory.

Explanation:

Answer:

The temperature is around 1000°C at the base of the crust, around 3500°C at the base of the mantle, and around 5,000°C at Earth's centre. The temperature gradient within the lithosphere (upper 100 km) is quite variable depending on the tectonic setting.

Explanation:

Answer:

The inner mitochondrial membrane thus represents the principal site of ATP generation, and this critical role is reflected in its structure.  Otherwise, the inner membrane is impermeable to most ions and small molecules—a property critical to maintaining the proton gradient that drives oxidative phosphorylation.

Explanation:

Answer:

Felsic minerals (quartz, K feldspar, etc) are light colored while mafic minerals (hornblende, pyroxenes) are normally dark colored. Felsic minerals have the lowest melting points (600 to 750 °C) and mafic minerals have higher melting points (1000 to 1200 °C).

Explanation:

Answer: IBIB and IBi

Explanation:IBIB is a homozygous dominant and IBi is a heterozygous B blood type.

Answer:

C

Explanation:

Ribosome help to pack protein into membrane-bound vesicles

Answer: It increases

Explanation: A liquid boils at a higher temperature. When heat is applied to the liquid, the temperature increases until it reaches its boiling temperature (boiling point), a temperature at which it starts to boil. For instance pure water boils at 100°C and freezes at 0°C. As the liquid continues to boil, the temperature continues to increase.

Answer:

RNA polymerase transcribes the DNA strand and synthesis RNA from a DNA template

The role of RNA polymerase is it helps in transcribing the DNA strand and forms mRNA (messenger RNA). Thus, the correct option is C.

Transcription is the process of copying or transcription of a segment of DNA into RNA that is messenger RNA (mRNA). The segments of the DNA sequence transcribed into mRNA molecules that can encode specific proteins, which are said to produce messenger RNA. Other segments of the DNA molecule are copied into RNA molecules called non-coding RNAs (ncRNA). mRNA comprises only 1-3% of the total RNA samples.

Transcription occurs in the nucleus of the cell and the mRNA formed from this process is sent to the ribosomes for translation. The major steps of transcription include initiation, promoter clearance, elongation, and termination step.

Therefore, the correct option is C.

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Answer:A

Explanation The water will move out of the cell via the cell membrane. Animals and Protozoa do not have a cell wall and cytolysis (cell rupture) will occur, but not in plants.

Answer:

If the concentration of water was higher  inside a plant cell than outside the cell,  what would the water do?

It would cause the cell to burst

Explanation:

The above process is termed as hypertonic solution, it makes the cell to burst.

Ocean acidification is a process that can occur in ocean due to the uptake of extra atmospheric [tex]Co_2[/tex]

Explanation:

Ocean acidification is happening since abundance carbon dioxide [tex](Co_2)[/tex] in the environment is being caught up in the outside of the sea at an expanding rate. Regularly, sea water is less acidic than freshwater. As such the sea assimilates increasingly more carbon dioxide from the climate, it turns out to be progressively acidic.

This process of  [tex](Co_2)[/tex] brings about more hydrogen particles, which builds the causticity of the sea. So this Ocean acidification is a procedure that can happen in the sea because of the take-up of extra biometric.

Ans is Force means a push or pull.for eg:pull a door,push a door.

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If a 10-kilogram wagon has a speed of 25 meters per second, the momentum of the wagon would be 250 kilograms-meter / second.

It can be defined as the product of the mass and the speed of the particle, it represents the combined effect of mass and the speed of any particle, and the momentum of any particle is expressed in Kg m/s unit.

As given in the problem If a 10-kilogram wagon has a speed of 25 meters per second, then we have to find the  momentum of the wagon,

The momentum of the wagon = mass * speed of the wagon

                                                  =10*25

                                                   =250 kilogram -meters / seconds

Thus, If a 10-kilogram wagon has a speed of 25 meters per second, the momentum of the wagon would be 250 kilograms-meter / second.

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Answer:

This honestly depends on whether it is a cold or warm occuluded front. Cold occluded fronts bring violent storms like hail and thunderstorms and have also caused tornadoes. Warm occluded fronts typically produce light rain.

Best answer is : An extended period of rain

Explanation:

Occluded Front Forms when a warm air mass gets caught between two cold air masses. The warm air mass rises as the cool air masses push and meet in the middle. The temperature drops as the warm air mass is occluded, or “cut off,” from the ground and pushed upward. Can bring strong winds and heavy precipitation.

Answer:

No.

Explanation:

Antibiotics fight off Bacteria. Anti(B)iotics for (B)acteria

Vaccines are for virus. (V)accine for (V)irus

Answer:

3

Explanation:

Answer:

The force that contributed to the formation of planets, determines the motion of bodies in the solar system, and pulls objects to the center of Earth is called Gravity.

isaac Newton's first law of motion, also known as the law of inertia,

Explanation:

Answer:

First blank is gravity second blank is inertia

Explanation:

The chance of the offsprings with stripe on head is 50%.

Option A.

Here according to the figures, the male is the brown one which has no stripe on his head as mentioned, and the female is the pink one who has a stripe on her head. The gene for the head stripe is denoted by H.

So the genotype of the father which is given as Hh. He is heterozygous.

The genotype of the mother should be hh as she has stripe and she must be homozygous recessive to have it.

So the gametes from father is H and h. Whereas the gametes from mother is only h.

So the genotype of the offsprings are Hh and hh as 50% each.

So the probability of the offspring being striped head is 50%.

Answer:

A lahar can be described as a critical type of mud or debris flow.

The components of a lahar include a slurry containing pyroclastics, debris from rocks and water. A lahar is made up of wet concretes.

The lahar originates from the slopes of a volcano and gets eroded in a river valley. A lahar has the ability to grow in size as it may accumulate other rock debris along with it as it flows down.

Grey water can be beneficial for plant irrigation as it reduces the demand for freshwater, but it may contain harmful substances that can affect plant health depending on the content of the grey water and the type of plants.

Grey water, which is the wastewater from domestic activities like laundry, dishwashing, and bathing, can be reused for irrigating plants in gardens and landscapes. However, the effects on plants depend on various factors such as the presence of bacteria, heavy metals, organic pollutants, and the specific needs and sensitivities of the plants being irrigated.

On one hand, reusing grey water for irrigation can be beneficial by providing a source of nutrients and reducing the need for freshwater resources. On the other hand, it may contain substances that are potentially harmful to plants. For example, certain detergents contain salts and chemicals that can build up in the soil and negatively affect plant growth. Additionally, pollutants like pharmaceuticals or personal care product residues might be present in grey water and could pose risks to plant health.

The water quality of the pond is worst in month of June and July. And the pH of the pond is mostly acidic, but went from alkaline in month of April. A.

The pond quality assessment requires the measure of the pH of the water of pond and the number of colonies of bacteria and presence of other organisms in pond and their assessment. The report given here shows the variation of pond water pH for about 10 months and the colony count per liter for 10 months.

Here in the graphs given, we can see that the pond water quality got worst in month of June and July, because in those months, the water got the most number of faecal coliform bacteria. This is mainly because the months of June and July are the monsoon season, and the water sweeping from different areas of soil got the fecal coliform bacteria into the pond which helped in their growth and increased numbers.

In the month of March, the pH got to the highest of 7.5 which is because the March season don't generally get too much rainfall which is why the water concentration decreases and the growth of different other bacteria and plants make the water alkaline.

Final answer:

Chromosomes are structures comprised of DNA and proteins that contain genes, which code for proteins responsible for various traits and functions in the body. Humans have 23 pairs of chromosomes, including autosomes and sex chromosomes, with approximately 20,000 to 22,000 genes.

Explanation:

Chromosomes are essential structures within the cells of our body that carry out a vital role in heredity and gene expression. They are coiled structures composed of DNA and proteins, specifically histones, which help organize and condense the DNA into a compact form that can fit within the nucleus of a cell. During cell division, chromosomes ensure that DNA is accurately replicated and distributed to each new cell.

DNA within chromosomes is segmented into units called genes, which harbor the instructions for making proteins, the building blocks of our body. These proteins perform a multitude of functions, including building cellular structures, carrying out metabolic reactions, and responding to environmental signals.

Human cells normally contain 46 chromosomes, arranged in 23 pairs. Twenty-two of these pairs are autosomes, with the remaining pair being the sex chromosomes (XX in females, XY in males). The estimated 20,000 to 22,000 human genes are responsible for a huge variety of traits and functions. Genes contain the specific sequences of DNA that are transcribed and translated to create proteins. Each gene has multiple forms or alleles, which can result in variations in the physical manifestation of a genetic trait.