1.) A rare disease which is due to a recessive allele (a) that is lethal when
The genotype (aa), occurs with a frequency of one in a million. How many
individuals in a town of 14,000 can be expected to carry this allele? (round
up to nearest whole number

2.) Eleven organisms express the recessive allele in a population of 2,646. How
many organisms are carriers? (round to nearest whole number)

Chrysotuxum cautum is very similar in apperance to Vespula flavopilosa, This similarity in appearance is an advantage for these wasps because it allows them to mimic the appearance of their less aggressive counterparts in the family Vespidae.

This mimicry is known as Batesian mimicry and it is an evolutionary strategy used by many animals to gain protection from predators. By mimicking the appearance of less aggressive species, these wasps are able to avoid being eaten by predators who mistake them for their less aggressive counterparts. This allows them to live longer and reproduce more, thus increasing their chances of passing on their genes to the next generation.

In summary, the advantage of Chrysotuxum cautum being similar in appearance to Vespula flavopilosa is that it allows them to mimic the appearance of less aggressive species in the family Vespidae, thus avoiding being eaten by predators. This is an example of Batesian mimicry, an evolutionary strategy used by many animals to gain protection from predators.

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The nerves and blood vessels that service a muscle fiber are located in the connective tissues of its d. endomysium.

The endomysium is a layer of connective tissue that surrounds individual muscle fibers. It consists of delicate connective tissue fibers and contains capillaries, nerves, and lymphatic vessels that provide the necessary oxygen, nutrients, and innervation to the muscle fiber. The endomysium serves as a protective and supportive layer for the muscle fibers, helping to maintain their structural integrity.

While the other options mentioned (myofibrils, sarcomere, perimysium, and sarcolemma) are also components of the muscle structure, they do not contain the nerves and blood vessels that service the muscle fiber.

Myofibrils are contractile structures within the muscle fiber, sarcomere is the basic functional unit of the muscle, perimysium is a connective tissue layer surrounding bundles of muscle fibers, and sarcolemma is the plasma membrane surrounding the muscle fiber. However, it is the endomysium that houses the vital vascular and nervous supply for the muscle fiber.

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The genotypes of a male pea plant that is homozygous dominant crossed w/ female pea plant that is heterozygous would be PP and Pp (Option D).

In a broad sense, the term "genotype" refers to the genetic makeup of an organism; in other words, it describes an organism's complete set of genes. In a more narrow sense, the term can be used to refer to the alleles, or variant forms of a gene, that are carried by an organism.

The male pea plant being homozygous dominant means it has two dominant alleles (PP), while the female pea plant being heterozygous means it has one dominant allele and one recessive allele (Pp).

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In blood agar plates swabbed with a sample from your mouth, the alpha-hemolysis pattern will likely predominate. This is because the oral cavity typically contains Streptococcus species that cause partial hemolysis, which is characteristic of alpha-hemolysis

When swabbed with a sample from the mouth, the alpha-hemolysis pattern will predominate in the blood agar plates. Alpha-hemolysis is a partial lysis of red blood cells (RBCs) in the blood agar plates that creates a greenish discoloration of the agar around the colony.

The alpha-hemolysis pattern results from the partial lysis of red blood cells by bacteria. The hemoglobin in the RBCs is broken down into met hemoglobin. Streptococcus pneumoniae and Streptococcus viridans are the two most common bacteria associated with alpha-hemolysis.

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The relationship between bacteria that live in the human intestine and the human host can be best described as mutualism. Mutualism is a symbiotic relationship where both organisms involved benefit from each other.

In the case of bacteria in the human intestine, they play a crucial role in digestion and help break down complex nutrients that the human body cannot digest on its own. The bacteria ferment undigested carbohydrates, produce essential vitamins like vitamin K and certain B vitamins, and help in the absorption of minerals. In return, the bacteria obtain a stable and nutrient-rich environment provided by the host's intestinal tract.

The human host benefits from this mutualistic relationship by gaining improved nutrient absorption and enhanced digestion. The bacteria assist in the breakdown of dietary fibers, producing short-chain fatty acids that serve as an energy source for the host's colonocytes.

Additionally, the presence of beneficial bacteria in the intestine helps maintain a healthy gut microbiota balance, which is crucial for immune function and overall well-being.

It is important to note that mutualism is characterized by both parties benefiting, and neither causing harm or significant detriment to the other. Unlike parasitic relationships where one organism benefits at the expense of the other, the interaction between bacteria and the human host in the intestine is generally beneficial and supports the health and functioning of both parties involved.

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Answer:

Echo sounding

Explanation:

Echo sounding is the key method scientists use to map the seafloor today. The technique, first used by German scientists in the early 20th century, uses sound waves bounced off the ocean bottom.

Abiotic and Biotic Factors to Consider:

The relationship between an ecosystem's inhabitants and its physical surroundings is complex; it involves both biological entities (biotic) and non-biological ones (abiotic).

Biotic features incorporate all life forms including but not limited to flora, fauna microorganisms (bacteria & fungi) that interact within themselves leading up to symbiosis(interdependent relationships).

Abiotic characteristics encompass qualities such as climate variations, soil structure quality, air composition, water supply  amount and quantity making selves known  through environmental shifts leading up to significant alterations within ecosystems over time.

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The factor that does not contribute to muscle fatigue associated with prolonged exercise is not explicitly mentioned in the question.

Muscle fatigue associated with prolonged exercise is a complex phenomenon influenced by various factors.

These factors can include metabolic changes, depletion of energy stores, accumulation of metabolic byproducts, impaired muscle contractility, and central nervous system fatigue.

However, the question does not specify which factor does not contribute to muscle fatigue.

To identify the factor that does not contribute to muscle fatigue, it would be necessary to consider factors that are known to play a role in muscle fatigue and exclude those that do not have a significant impact.

Some potential factors that might not contribute to muscle fatigue include psychological factors (e.g., motivation, attention), muscle fiber type distribution (as certain fiber types may be more resistant to fatigue), and genetic factors (individual variations in fatigue resistance).

However, without further information, it is not possible to determine the specific factor that does not contribute to muscle fatigue associated with prolonged exercise.

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Answer: The correct answer is C!

Explanation:

Plant cells submerged in a concentrated sugar solution, which has a low water concentration relative to its contents, will osmotically lose water. They are believed to have been plasmolyzed when their cell membranes began to peeled away from their cell walls.

I believe this is best represented in answer C as you can see that the water is now lost. I hope this can help you.

A tropic-releasing hormone released from the hypothalamus would be expected to increase the release of TSH hormones from the anterior pituitary. Hence option E is correct.

The thyroid-stimulating hormone(TSH) regulates the activity of the thyroid gland. This hormone is released from the anterior pituitary when there is a release of Thyrotropin-releasing hormone from the Hypothalamus.

The release of TSH stimulates the production of thyroid hormones, thyroxine, and triiodothyronine. These hormones are released when TSH from the pituitary binds to the receptors of the thyroid gland. The thyroid hormones are essential to maintain the heart and digestive functions, brain development, muscle control, and the body’s metabolic activity.

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Energy pyramids are the models that show the flow of energy from the primary to the next level. From the energy pyramid, it can be said that long-term stability will be continued. Thus, option C is correct.

Energy pyramids are the representation of the energy levels and the primary producers and other consumers. The producers are the base of the pyramid followed by the primary consumers.

In an aquatic ecosystem, the algae are the primary producers that provide energy to plankton and act as primary consumers. These are get eaten by small fishes and large fishes. The number of consumers gets decreased as one rises to the upper level.

Therefore, option C. an aquatic ecosystem will have stability.

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Answer:

Explanation:

Genetic variation is increased by meiosis

During fertilisation, 1 gamete from each parent combines to form a zygote. Because of recombination and independent assortment in meiosis, each gamete contains a different set of DNA. This produces a unique combination of genes in the resulting zygote.

Prezygotic mechanisms lead to reproductive isolation by preventing the formation of Zygote.

Zygote- The cell formed by the combination of a single egg cell and a single sperm is known as a zygote. Within 24 hours following fertilization, it divides rapidly from a single cell in the beginning. 23 chromosomes are of maternal origin in zygotes, while 23 are of paternal origin.

Chromosome- Chromosomes are the highest level of organization in a cell, and they contain the genes and the genetic code that carry the information the cell needs to reproduce itself.

Gene- The fundamental genetic component transferred from parent to child. Genes are composed of DNA sequences and are organized sequentially at specified sites on chromosomes in the cell nucleus.

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Organ reserve power decreases each year, but it usually does not matter because people rarely need to draw on it.

Organ reserve is a term used to describe the extra physiological capacity that an individual's organs have beyond what is needed for their usual functioning. As humans age, their organs' reserve capacity decreases and their systems become less efficient than they were in the past. As people grow older, they will gradually lose organ reserve power. This is a natural occurrence that occurs as a result of the aging process. The liver, kidneys, heart, and other organs are among the parts of the body that will become less efficient. It's worth noting, however, that people typically do not require the extra capacity provided by organ reserves. This is because the body's systems and organs are designed to operate at a level that is optimal for them. Only in rare cases, when the body is put under extreme stress, will organ reserves come into play.

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Answer:

directional selection

Explanation:

Directional selection is a type of natural selection where individuals exhibiting an extreme phenotype for a given trait are favored over the mean or other extreme phenotype. This type of selection can lead to drastic and fast changes in allele frequencies between generations in a population, being particularly important in speciation processes. Directional selection is common under environmental changing conditions (e.g., weather, climate, food availability, etc) or when individuals migrate to other regions in order to adapt to new environmental pressures.

CHECK THE COMPLETE QUESTION BELOW;

Select the terms that fit in the science category "Earth and Space." Select all that apply. water air animals land plants solar system light sound

All these five system contains gases and other resources which are required  to sustain life of man and animal, and they contain Water, air and others.

Therefore, terms that fit in the science category of Earth and space are water, air , plants animal, light as well as solar system

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Answer:

A

Explanation:

The decimation of the North Cascades grizzly bear population continued for more than a century with commercial trapping, habitat loss, and unregulated hunting the leading causes of death

Osmosis is the simple passive transport through which water moves through a semipermeable membrane when solutions at bot sides show a difference in solute concentration.  1. 10%. 2. 90%. 3. 80%. 4. Yes. 6. swell. 7. hypertonic

Osmosis is the simple passive transport of water molecules that occurs when two dilutions of different concentrations are separated by a semipermeable membrane.

The membrane allows the pass of water but not solute. Hence, water can move from the most diluted side (higher water potential) to the less diluted one (lower water potential).

Let us remember that the water potential is the potential energy in a mass of water. Among other factors, it depends on solute concentration,

Concerning solute concentrations,

1. What is the % of glucose outside the cell? 10%

2. What is the % of water outside the cell? 90%

3. What is the % of water inside the cell? 80%

4. Will osmosis occur? Yes, because there is a difference in solute and water concentration.

5. If so, which way will water move (into or out of the cell)? Into the cell.

6. Will the cell swell or shrink? the cell will swell because water in goin in.

7. The cell is in what type of solution (hypertonic, hypotonic, isotonic)? hypertonic, because solute concnetration is higher in the cell thann outside.

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Answer:

The correct option is ( have a respiratory system with spiracles connecting to tracheae).

Explanation:

The class INSECTA are under the phylum arthropoda which is the largest phylum in the animal kingdom. The insects are mainly land animals, they are widespread and adapted to all types of environment. They are also the only invertebrates that can fly. Examples of insects include: ants, butterflies, beetles, aphids and grasshoppers.

An insect has a well-defined head, thorax and an abdomen. The head had six segments and bears a pair of jointed antennae, compound eyes, simple eyes and mouthparts. The thorax had three segments, each bearing a pair of jointed walking legs. The abdomen has eleven segments and may have sensory and reproductive structures.

An insect carries out gaseous exchange by means of a network of open air tubes or TRACHEAE inside it's body. These tubes have openings called SPIRACLES to the exterior. Therefore the insects have an respiratory system with spiracles connecting to tracheae.

Trauma to stratum Basale would not interfere with the skin's ability to skin's ability to function.

The innermost layer of the epidermis, the skin's outermost layer, is the stratum Basale, sometimes referred to as the basal cell layer. It is made up of basal cells, which continuously divide to create new cells that move to the epidermis' top layers.

Depending on the intensity and extent of the damage, trauma or injury to the stratum Basale can affect the skin's capacity to function in a number of different ways. Here are a few potential outcomes:

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Answer:

Legs

Explanation:

Answer: See Below

Explanation:

1. There are 6 protons in a carbon atom (The # of protons is the same as the atomic number).

2. Attached below. Red circles are protons blue are neutrons.

Understand that the number following the C (12,13,14)

refers to the total number of protons and neutrons in the atom. Proton number does not change only neutrons can.

Yes, a frameshift mutation that occurs during DNA replication prior to meiosis will be inherited because the error happened in a gamete; option C.

A mutation is a change that occurs in the sequence of nucleotides in a DNA molecule.

Mutations that are inheritable are those mutations that affect the gametes.

Gametes refer to the haploid cells that are produced during the process of meiosis. Gametes produce egg cells and sperm cells.

Therefore, a mutation that occurs prior to meiosis could be inherited because it will be present in the gametes.

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Mental disorders are recognized conditions that have an impact on thoughts and behaviors, whereas mental health is any individual's level of mental and emotional well-being. Everyone can experience brief periods of poor mental health, but not everyone has a mental disorder.

It may be necessary to take some of the same steps to treat mental diseases and promote good mental health. For instance, counseling sessions can benefit a person's mental health regardless of whether they have a mental condition. People can lead more fulfilling lives with the assistance of therapy, lifestyle modifications, drugs, and other procedures. It is important to be physically, mentally, and socially well. While overcoming daily obstacles, someone with good mental health can live a full life. A diagnosable disorder with a set of criteria, mental illness can be identified. Genes, brain chemistry, or trauma are a few possible causes.

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Answer:

Sonar

Sound waves used for measuring the distance of an object are called Sonar.