Darwin's theory of natural selection is scientifically tested and accepted while Lamarck's hypothesis is largely inaccurate. Discuss the key differences between Darwin's theory of natural selection and Lamarck's hypothesis. Specifically discuss what each states about- a) where does variation come from? b) how do individuals in a population vary- are individuals all the same in their traits or variable? c) do individuals change and evolve, or do populations change and evolve? d) is evolution progressive towards perfection, is there perfection in individuals?

Answer:3142

Explanation:

Answer:

nu,mber 3 is sooo hard

Explanation:

Answer:

The cell controls what passes in and out of the cell.

Explanation:

The specific bond in a protein that absorbs light at 215 nm is the Tryptophan bond.

Tryptophan is one of the 20 amino acids that make up proteins and has an aromatic ring structure that absorbs light in the ultraviolet range. This ring structure, known as an indole group, is unique to tryptophan and allows it to absorb light at 215 nm. In proteins, tryptophan residues are often found in hydrophobic environments, where they are protected from the solvent, and this environment can influence the way that tryptophan absorbs light. Because of this, the absorption of light at 215 nm by tryptophan residues in proteins can provide information about the protein's structure and stability.

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When both natural selection and mutation are occurring in a population, the result is an equilibrium where the number of alleles added by mutation is balanced by the number of alleles removed by selection.

It is important to note that selection and mutation are different evolutionary forces and do not affect one another directly. However, selection is a stronger force than mutation and can shape the pattern of alleles in a population. Mutation, on the other hand, introduces new alleles into a population, which can lead to genetic diversity. Ultimately, the equilibrium reached in a population depends on the rate and type of mutations and the pattern of selection.

In summary, the interplay between selection and mutation is complex and can lead to diverse genetic outcomes over time. When both natural selection and mutation are occurring in a population, the result is an equilibrium that depends on the balance between these two evolutionary forces. Natural selection acts on existing genetic variation to favor beneficial traits, while mutation introduces new alleles into the population.

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When the courts or legislators make law, they are guided by certain habits of mind and specific beliefs about human nature which is known as jurisprudence.

Jurisprudence refers to the philosophy or theory of law, encompassing the principles and beliefs that guide courts and legislators in making laws. It involves the study and interpretation of legal principles, concepts, and theories. Different schools of jurisprudence arise from varying habits of mind and beliefs about human nature, influencing the development and application of laws.

When courts or legislators make laws, their decisions and actions are influenced by certain habits of mind and specific beliefs about human nature. These factors shape their approach to interpreting laws, resolving legal disputes, and creating new legislation. The collective body of these guiding principles and beliefs is referred to as jurisprudence.

Jurisprudence encompasses a wide range of philosophical and theoretical perspectives on law, such as natural law, legal positivism, legal realism, and critical legal studies, among others. Each school of jurisprudence offers its own understanding of the nature of law, its purpose, and how it should be applied in society.

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Answer:

DNA and Protiens.

Explanation:

Answer:

i agree

neuron undergoes mitosis, two daughter cells are produced, one daughter cell is a stem cell, one daughter cell is identical to neuron

Explanation:

neuron undergoes mitosis, two identical daughter cells are produced, daughter cells divide to produce stem cells. neuron undergoes mitosis, two daughter cells are produced, one daughter cell is a stem cell, one daughter cell is identical to neuron.

Answer:

D. stem cell undergoes mitosis, two daughter cells are produced, one daughter cell is a neuron, one daughter cell is identical to stem cell

Explanation:

Answer:

Mendel formulated this principle after discovering another principle known as Mendel's law of segregation, both of which govern heredity. The law of independent assortment states that the alleles for a trait separate when gametes are formed. These allele pairs are then randomly united at fertilization.

Explanation:

Mendel discovered this principle after performing dihybrid crosses between plants that had two traits, such as seed color and pod color, that differed from one another. After these plants were allowed to self-pollinate, he noticed that the same ratio of 9:3:3:1 appeared among the offspring.

Answer:

They improve water quality, prevent soil erosion and land mass loss, protect coastlines, store away carbon, and provide habitats for a wide range of diverse plant and animal communities.

Explanation:

Wetlands are regions or areas of or periodically water-covered soil. These are classified as swamps, marshes, bogs, fens and shallow water. Others, that contain partially decomposed organic matter are known as peatlands.

These are diverse and essential regions found across several biospheres. They improve water quality, prevent soil erosion and land mass loss, protect coastlines, store away carbon, and provide habitats for a wide range of diverse plant and animal communities. Additionally, wetlands remove excess nutrients from runoff, preventing pollution of waterways.

Answer:

They improve water quality, prevent soil erosion and land mass loss, protect coastlines, store away carbon, and provide habitats for a wide range of diverse plant and animal communities.

Explanation:

look up

The components involved with ER transport matched with the appropriate cellular location is as follows:

1. signal-recognition signal - A. cytosol

2. protein translocator - C. ER membrane

3. mRNA - A. cytosol

4. SRP receptor - C. ER membrane

5. active site of signal peptidase - B. ER lumen

1. Signal-recognition signal (SRS) - located in the cytosol, it is responsible for recognizing and binding to the signal sequence on newly synthesized proteins.

2. Protein translocator - located in the ER membrane, it facilitates the movement of newly synthesized proteins from the cytosol to the ER lumen.

3. mRNA - located in the cytosol, it serves as the template for protein synthesis.

4. SRP receptor - located in the ER membrane, it binds to the signal recognition particle (SRP) and facilitates the transfer of the protein to the protein translocator.

5. Active site of signal peptidase - located in the ER lumen, it cleaves the signal sequence from the newly synthesized protein.

In summary, the components located in the A. cytosol are 1. signal-recognition signal and 3. mRNA. The components located in the B. ER lumen is the 5. active site of signal peptidase. Lastly, the components located in the C. ER membrane are 2. protein translocator and 4. SRP receptor.

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Answer:

Option c is the right answer

Explanation:

Answer:

go answer that urself lol

Explanation:

noob

The brain is an organ composed of a significant amount of nerve tissue that is shielded by the skull. It affects almost all of the major body systems.

Lobes of the brain:

The frontal lobe is in charge of planning, decision-making, memory, emotion, and movement.

The parietal lobe is responsible for controlling mathematical and spatial reasoning as well as sensations including touch, pressure, temperature, and pain.

The temporal lobe is involved in memory, language, and hearing.

The occipital lobe is in charge of vision and the interpretation of visual data.

The information about the body's internal state, such as hunger, thirst, and pain, is processed by the insula lobe.

What is the function of the brain?

Processing sensory data, controlling blood pressure and respiration, and releasing hormones are some of the brain's primary functions.

The greatest portion of the brain is called the cerebrum. It has two halves, known as hemispheres. The cerebellum is situated directly below the occipital lobes in the back of the brain. Fine motor abilities, or the coordination of smaller, or finer, motions, particularly those involving the hands and feet, are involved. For messages entering the brain, the thalamus functions as a form of relay station. Additionally, it affects alertness, pain perception, and attentiveness.

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Answer:

Because of the sunlight. When cotyledons are exposed to light, because of the reflectants, they look green. This is because beans reflect the sun's blue and red UV rays, which makes them green.

Answer: A furnace in your home, a battery.

Mia's rate of return for this investment is 8%.

To calculate Mia's rate of return for this investment, we can use the formula:

Rate of return = [(Ending value - Initial value) + Dividends] / Initial value

Given the information provided:

Initial value = $50

Ending value = $52

Dividends = $2

Substituting the values into the formula:

Rate of return = [($52 - $50) + $2] / $50

Rate of return = $4 / $50

Rate of return = 0.08 or 8%

Therefore, Mia's rate of return for this investment is 8%.

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Sexual reproduction is the cellular process that would most likely lead to increased genetic variation in a population of organisms.

Sexual reproduction involves the fusion of gametes from two parent organisms to produce offspring. During this process, genetic material from each parent combines, resulting in new combinations of alleles in the offspring. The shuffling and recombination of genetic material during sexual reproduction, such as independent assortment and crossing over during meiosis, generate genetic diversity.

Independent assortment occurs when chromosomes align randomly during meiosis, leading to different combinations of maternal and paternal chromosomes in the gametes. This process increases the potential for different combinations of alleles to be inherited by the offspring.

Crossing over occurs when homologous chromosomes exchange genetic material during meiosis. This process creates new combinations of alleles on the chromosomes, further increasing genetic variation in the offspring.

By introducing new combinations of alleles through the fusion of gametes, sexual reproduction promotes genetic diversity within a population. This increased genetic variation can have important implications for the survival and adaptation of organisms to changing environments.

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I couldn't see ur picture But I think from the options I think the answer is option D

D) organisms are made up of large number of cells

The feature of cell theory that is best demonstrated in the image is organisms are made up of a large number of cells. Thus, the correct option for this question is D.

The cell theory was proposed by two famous scientists. i.e. M.J. Schleiden and T. Schwann. There are three assumptions that fall under the cell theory.

Cell theory was further refined by German biologist Rudolf Virchow in 1855. According to him, all cells are arising from pre-existing cells.

According to the three assumptions given above, the one which is best demonstrated by the image is that Organisms are made up of a large number of cells.

Therefore, the correct option for this question is D.

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I don't really know what this question is asking but I'm just gonna list what I know...

Colour blindness is an X-linked recessive disorder. This means that the father's genotype will be \(X^{x} Y\) while the daughter's genotype will be \(X^{X} X^{x} \) as she will automatically receive the recessive allele from dad and the fact that she isn't colourblind means that she received the dominant allele from mom.

If this woman is married to a man with with a genotype of \(X^{X} Y\), then there is a 50/50 chance that a boy will be colourblind and no chance that a girl will be colourblind but there is a 50/50 chance that she will be a carrier.

If married to a man with a genotype of \(X^{x} Y\), then there is a 50/50 chance that a boy will be colourblind, and a 50/50 chance that a girl will be colourblind but there is a 50/50 chance that she will be a carrier.

Numbers increase in viral and fungal infections; become large phagocytic cells once they leave the blood vessels are Neutrophils.

Neutrophils are a type of white blood cell that play a crucial role in the immune response against infections. During viral and fungal infections, the number of neutrophils tends to increase in order to combat the invading pathogens. Neutrophils are particularly effective against bacterial, viral, and fungal infections due to their ability to phagocytose (engulf and destroy) pathogens.

Once neutrophils leave the blood vessels and migrate to infected tissues, they undergo a process called diapedesis. In the infected tissues, neutrophils become large phagocytic cells capable of engulfing and neutralizing pathogens. This process is known as phagocytosis, where neutrophils form pseudopods that surround and engulf pathogens, leading to their destruction.

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The seven ligaments of the hip include the iliofemoral ligament, pubofemoral ligament, ischiofemoral ligament, ligamentum teres femoris, zona orbicularis, transverse acetabular ligament, and sacroiliac ligament. These ligaments play an essential role in maintaining the stability and mobility of the hip joint.

The lumbosacral plexus consists of nerve roots L1-L5 and S1-S4.

The nerves that are part of this plexus include the femoral nerve, obturator nerve, sciatic nerve, superior gluteal nerve, inferior gluteal nerve, and pudendal nerve.

These nerves innervate the muscles of the lower extremities, pelvis, and perineum.

The iliopsoas is a composite muscle consisting of the psoas major and iliacus muscles.

It originates from the lumbar vertebrae and iliac fossa and inserts onto the lesser trochanter of the femur.

It flexes the hip joint and is innervated by the femoral nerve.

The gluteal muscles include the gluteus maximus, medius, and minimus. The gluteus maximus originates from the ilium, sacrum, and coccyx and inserts onto the gluteal tuberosity of the femur.

It extends and laterally rotates the hip joint and is innervated by the inferior gluteal nerve.

The gluteus medius and minimus both originate from the ilium and insert onto the greater trochanter of the femur.

They both abduct and medially rotate the hip joint and are innervated by the superior gluteal nerve.

The tensor fascia latae originates from the iliac crest and inserts onto the iliotibial tract.

It flexes and abducts the hip joint and is innervated by the superior gluteal nerve.

The piriformis muscle originates from the sacrum and inserts onto the greater trochanter of the femur.

It laterally rotates the hip joint and is innervated by the nerve to piriformis.

The obturator internus muscle originates from the pelvis and inserts onto the greater trochanter of the femur.

It laterally rotates the hip joint and is innervated by the obturator nerve.

The superior and inferior gemellus muscles both originate from the ischial spine and insert onto the greater trochanter of the femur.

They both laterally rotate the hip joint and are innervated by the nerve to obturator internus and nerve to quadratus femoris, respectively.

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Question

know the names and importance of the seven ligaments of the hip.

know which nerves are part of the lumbosacral plexus, including the roots.

know the location, origin and insertion, function, and innervation of the following muscles:

iliopsoas psoas major iliacus gluteal muscles gluteus maximus,

Group of options

medius, and minimus tensor fascia latae piriformis obturator internus superior and inferior gemellus

The two natures of insular biotas refer to their isolation and unique ecological characteristics. Insular biotas are typically isolated from mainland ecosystems and have evolved in distinct ways due to their insularity.

Two natures of insular biotas are:

1. Isolation: Insular biotas, being located on islands or isolated areas, experience limited interaction with other ecosystems. This results in unique species compositions and adaptations due to the absence of certain external influences.

2. Endemism: Insular biotas often have high levels of endemism, meaning many species found in these ecosystems are unique to that specific location. This is a result of the isolation, which allows species to evolve independently from their mainland counterparts.

This isolation has led to the development of unique species and communities, as well as increased vulnerability to threats such as invasive species and habitat loss.

The insular nature of biotas also means they are often more sensitive to environmental changes, making conservation efforts crucial for their survival.

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High antigenic variation through increased mutation rates. The biological property of a pathogen that could block the successful design of an effective vaccine is having a high antigenic variation through increased mutation rates.

Antigenic variation is a biological property of pathogens that involves changes in their antigenic structure, and it could block the successful design of an effective vaccine. Increased mutation rates cause the emergence of new antigenic variants that are different from previously existing ones. This makes it challenging to design a vaccine that targets all the existing antigenic variants, particularly if they are continually emerging or evolving. This means that even if an effective vaccine is intended for a particular variant, it may not be effective against other variants, limiting its efficacy.

Antigenic variation is common in RNA viruses like influenza viruses, human immunodeficiency virus (HIV), and coronaviruses like SARS-CoV-2, which causes COVID-19. The influenza virus has a high mutation rate, which explains why people need to get vaccinated annually because the vaccine efficacy reduces due to the emergence of new strains. HIV also undergoes antigenic variation, which makes it challenging to design a vaccine that targets all existing strains.

In conclusion, the high antigenic variation through increased mutation rates is a biological property of pathogens that could block the successful design of an effective vaccine.

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Smooth muscle, a type of tissue that allows for constriction or dilation, makes up the blood vessel walls. The absence of striations (stripes), which are present in both skeletal and cardiac muscles, gives smooth muscle its name.

Only smooth muscle cells are found in blood arteries. The tunica media houses these muscle cells, elastic fibres, and connective tissue. Even though vessels only have smooth muscles, skeletal muscle contractions are crucial for the venous system's ability to transport blood from the periphery to the heart.

The autonomic nervous system regulates the smooth muscle found in the walls of hollow internal organs like blood vessels, the gastrointestinal tract, the bladder, and the uterus. Since smooth muscle cannot be consciously controlled, it behaves spontaneously.

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