How and at what stage is independent assortment accomplished?.

Answer:

Quaternary

Explanation:

The Quaternary period which began around 2.6 million years ago or 2,588,00 years ago is known as the Age of humans.

During this period, the tectonic planets are in a place they are today but the climate was cold and ice glaciers started retreating.

During this period, the evolution of mammals reached on peak and the hominid lines began to evolve as the fossils of the first human belonged to this period. Homo erectus for the first time appeared at the beginning of this period and then evolved later into modern humans after they travelled to Europe and Asia.

Thus, Quaternary is the correct answer.

Answer:

A

Explanation:

Answer:

Well for instance, DNA polymerase is an enzyme that assists in the replication process by catalyzing the addition of nucleotides to the growing chain of DNA.

The resting membrane potential of a neuron refers to its stable electrical charge when not transmitting signals, typically around -70 millivolts (mV), maintained by ion concentration gradients and selective ion channels.

The resting membrane potential of a neuron refers to the electrical charge difference across its cell membrane when the neuron is at rest, meaning it is not sending or receiving signals. Typically, the resting membrane potential of a neuron is around -70 millivolts (mV) inside the cell compared to the outside.

This polarization is maintained by the distribution of ions, primarily potassium (K+) and sodium (Na+), across the membrane. The resting potential is a result of the balance between passive ion diffusion and active ion pumping mechanisms.

The sodium-potassium pump helps maintain this potential by actively pumping out three Na+ ions for every two K+ ions it pumps in. The resting membrane potential plays a crucial role in neuronal excitability and the transmission of signals within the nervous system.

Learn more about neuron

brainly.com/question/10706320

#SPJ11

Answer: t

Explanation:

The genome size of pathogenic Enterococcus aerogenes being slightly larger than that of their nonpathogenic counterparts can be attributed to several factors.

For more such questions on pathogenic Enterococcus

https://brainly.com/question/33283120

#SPJ8

Answer:

the first

Explanation:yes sirr

One new technology that could be created to help address an issue relating to human population growth is vertical farming. With the world population expected to reach 9.7 billion by 2050, there will be a significant strain on traditional farming methods to provide food for everyone.

Vertical farming involves growing crops in vertically stacked layers, allowing for higher crop yields in smaller areas. This technology has the potential to revolutionize food production by reducing land use, decreasing water consumption, and eliminating the need for harmful pesticides. It also allows for year-round production, making it an ideal solution for urban areas where space is limited. While still in its early stages, vertical farming shows great promise in addressing the food needs of a growing global population and reducing the environmental impact of traditional agriculture.

Learn more about farming here:

https://brainly.com/question/26922040

#SPJ11

Answer:

limb

Explanation:

the answer is limbs

Two or more tissues working together make up organs in the body.

Tissues are formed of group of cells. they have specific origin and function.

The tissues forms organs and organ system in the body of an organism.

Based on their ability to perform different function and distinct morphology, tissues are classified into four main types.

Epithelial tissues create a protective lining around the delicate organs. They occupy the linings of digestive track, urinary track, etc. Epithelial tissues are protective and secretory in functions.

Connective tissues connect the organs in the body and also present in fat storing cells. Blood is an example of specialized connective tissue.

Muscle tissues have the property of contraction. Skeletal muscle, smooth muscles and cardiac muscles are present in the body of an organism.

Nervous tissues contain specialized nerve cells for the conduction of information and chemical signals from central nervous system to various parts of the body.

Therefore, tissues are important in control, co-ordination and regulation of body functions.

Learn more about tissues, here:

https://brainly.com/question/17664886

#SPJ2

Answer:

Here are some atoms that can be found in protein hydrogen, carbon, sulfur, oxygen, and nitrogen.

Hope this helps :)

Protein has been the organic molecule that are polymers of amino acids. Proteins are composed of five major atoms of carbon, oxygen, hydrogen, sulfur, and nitrogen.

Proteins are the macromolecules that are polymers of amino acids. The monomeric units (amino acids) of the protein molecule are linked by the polypeptide bonds. They are involved in the majority of the activities that are crucial for the body to function.

The amino acid, the monomer has been composed of the carboxylic and the amine group that includes the atoms of nitrogen, carbon, oxygen, and hydrogen while the substitutional group may include the sulfur atoms. The carbon is the central atom attached to the other molecules.

Therefore, hydrogen, nitrogen, carbon, sulfur, and oxygen are the atoms of proteins.

Learn more about proteins, here:

https://brainly.com/question/13129

#SPJ6

Answer: All fingers, toes, feet, and palms are covered in small ridges. These are raised portions of the skin, arranged in connected units called dermal, or friction, ridges. They help us with our grip on objects that we touch. When these ridges press against things, they leave a mark, an impression called a fingerprint.

Explanation:

Answer:

Their purpose on the body is to increase the surface area and increase friction so hands can firmly grasp things, and feet do not slip when walking.

The imprint of a fingerprint consists of natural secretions of the sweat glands that are present in the friction ridge of the skin

Explanation:

They help us with our grip on objects that we touch. When these ridges press against things, they leave a mark, an impression called a fingerprint.

Let us represent the heterozygous with freckles by Ff and the homozygous with no freckles by ff. Thus, we construct the following Punnet square:

From this punnet square we see that:

50% of the offspring will be heterozygous with freckles (Ff).

50% of the offspring will be homozygous with no freckles (ff).

The autonomic and somatic nervous systems are two separate systems that work totally independent of each other and lack any functional overlap. False. Both are included in the peripheral nervous system.

The peripheral nervous system is all the nerves that are outside the brain and spinal cord. The function of the peripheral nerves is to connect the responses of the central nervous system to your organs and other parts of your body. The peripheral nervous system consists of the autonomic nervous system and the somatic nervous system.

The autonomic nervous system is the part of the peripheral nervous system that regulates the visceral functions of the body without us being aware of it. For example blood flow, heart rate, digestive process, and breathing process. While the somatic nervous system is part of the peripheral nerves that function to carry information on the sensory and motor nerves, to and from the central nervous system. Th3 functions to control all the things that you are aware of and consciously influence the body's response, such as moving the arms, legs, and other body parts. Thus, the autonomic and somatic nervous systems constitute the peripheral nervous system

Learn more about somatic nervous system at:

https://brainly.com/question/14296397

#SPJ4

The statement that says "The autonomic and somatic nervous systems are two separate systems that work totally independent of each other and lack any functional overlap" is a FALSE statement since both of these systems do have functional overlap.

Both autonomic and somatic nervous systems make the peripheral nervous system. They are all the nerves that are outside the brain and spinal cord, with the primary function of connecting the responses of the central nervous system to the parts of the body.

Since both of these systems work together for that function, it can be said that they have a functional overlap. Therefore, the statement in the question above is a FALSE statement.

Learn more about peripheral nervous system at https://brainly.com/question/13006013

#SPJ4

Answer: If the volume of a gas is increased at a constant temperature, the pressure of the gas decreases.

Explanation:  

The relation between variation in volume and variation in pressure of a gas at a constant temperature is given by Boyle's Law which states that: The product of pressure and volume of a mass of a contained gas is constant at a constant temperature.  

That is,

Pressure (P) x Volume (V) = constant (k)

[when the temperature (T) is constant; k ≠ 0.]

Or, P = \(\frac{k}{V}\)

That is, pressure varies inversely with volume or an increase in volume at a constant temperature causes a decrease in the pressure of the gas.

Detailed answer:

X-gal is included in the growth medium on which cells transformed with bacterial plasmids are grown. The reason x-gal is included is to identify bacteria that contain a recombinant plasmid.

To learn more about cells, refer to:

https://brainly.com/question/13920046

#SPJ4

Explanation:

9 The center of the atom is called the nucleus. Electrons are found in areas called shells. A shell is sometimes called an energy leve

12. 6

13. The atomic mass of an element is the average mass of the atoms of an element measured in atomic mass unit (amu, also known as daltons, D).

14.Elements are arranged from left to right and top to bottom in order of increasing atomic number.

15.The vertical columns on the periodic table are called groups or families because of their similar chemical behavior. A

10.Of these 118 elements, 94 occur naturally on Earth. Six of these occur in extreme trace quantities: technetium, atomic number 43; promethium, number 61; astatine, number 85; francium, number 87; neptunium, number 93; and plutonium, number 94.

Answer:

Only when variation among organisms is inherited from the previous generation, i.e. it has a genetic basis, will natural selection be able to occur. Natural selection cannot act on variation that is due purely to environmental conditions.

A. Mutations to DNA

B. Variations in phenotypes of a trait

C. Selective pressures from the environment

D. A very small population size

The correct answer to which is not required for natural selection among the options is a very small population size. Thus, the correct answer is D.

Natural selection is a theory proposed by Charles Darwin. It refers to the process through which populations of organisms living in different environment adapt to changes to their environment. Within a population, individuals that are not able to adapt to the environment gradually fade off the population while those that are better suited multiply and dominate the population.  

More on natural selection can be found here: https://brainly.com/question/1657375

Answer:

must be mined from underground

Please mark me as brainliest

The radioactively labeled uracil would be seen in the nucleus of the eukaryotic cell.

In eukaryotic cells, the nucleus is the organelle that contains the cell's genetic material, including DNA and RNA.

Uracil is one of the four nitrogenous bases found in RNA, and it replaces thymine found in DNA.

Since uracil is a component of RNA, which is primarily synthesized in the nucleus, the radioactively labeled uracil would be seen in the nucleus.

The nucleus of a eukaryotic cell is surrounded by a nuclear membrane, which separates it from the cytoplasm. It acts as the control center of the cell and is responsible for storing and protecting the DNA, as well as transcribing it into RNA.

Therefore, when a eukaryotic cell is exposed to radioactively labeled uracil, it would be incorporated into the RNA molecules being synthesized in the nucleus.

The radioactivity can then be detected using appropriate techniques to visualize the labeled uracil within the nucleus of the cell.

To know more about "Uracil" refer here:

https://brainly.com/question/31835857#

#SPJ11

Answer:Archaea

Explanation:

Specialized myoepithelial cells can be found amid the secretory cells of apocrine and merocrine sweat glands.

Glands may be defined as the cluster of cells in an animal's body that significantly synthesizes substances like hormones and liberate them into the bloodstream specifically. There are two types of glands that are typically present in humans.

Specialized myoepithelial cells are found amid the secretory cells at the deep end of the glands like apocrine and merocrine. Both of them are sweat glands.

Therefore, apocrine and merocrine are the glands that secrete specialized myoepithelial cells.

To learn more about Glands, refer to the link:

https://brainly.com/question/1474297

#SPJ4

One of the genetic diseases known as sickle cell disease is sickle cell anemia. Red blood cells, which deliver oxygen to every region of the body, are affected in terms of structure.

Sickle cell is a hereditary condition brought on by a gene deficiency. Only when two genes—one from the mother and one from the father—are inherited together will a person be born with sickle cell disease.

The Punnett square for the cross between a man with sickle cell trait (NS) and a woman with sickle cell trait (NS) is attached below.

The probabilities for each possible offspring are:

Therefore, the probability of having a child with sickle cell trait is 50%, the probability of having a normal offspring is 25%, and the probability of having a child with sickle cell disease is 25%.

Learn more about sickle cell anemia, here:

https://brainly.com/question/20892062

#SPJ1

Forgetting to use heat in the Spore Stain can have the following consequences:

Lack of proper staining: Heat is essential in the Spore Stain technique to facilitate the penetration of the primary stain (usually malachite green) into the endospores. Without heat, the primary stain may not effectively penetrate the spores, resulting in poor staining and difficulty in visualizing the spores.

Inaccurate identification: Endospores are highly resistant structures formed by certain bacteria as a survival mechanism. They are characterized by their unique staining properties. If heat is not applied during the staining process, the endospores may not be adequately stained, leading to potential misidentification or failure to detect the presence of endospore-forming bacteria.

In a clinical setting, sporulating bacteria have certain advantages over non-sporulating bacteria:

Survival in adverse conditions: Sporulating bacteria, by forming endospores, can withstand harsh environmental conditions such as extreme temperatures, desiccation, and exposure to chemicals or disinfectants. This allows them to persist and survive in environments where non-sporulating bacteria may not be able to survive.

Persistence in the host or environment: The ability of sporulating bacteria to form endospores allows them to persist in the host or the environment for extended periods. This can contribute to recurrent or chronic infections and the potential for transmission to others.

Increased resistance to disinfection: Endospores have a highly resistant outer layer, known as the spore coat, which provides protection against various disinfectants, heat, and other adverse conditions. This resistance allows sporulating bacteria to survive in hospital environments, on medical devices, and on surfaces despite disinfection protocols.

Most disinfectants require a certain amount of time for surface coverage to ensure effective disinfection due to several reasons:

to know more about Spore Stain visit :

https://brainly.com/question/28238683

#SPJ11

Answer:

Si, esto es posible ya que para llegar a su forma madura el ARN mensajero sufre un procesamiento conocido como empalme alternativo donde su longitud se reduce drásticamente mediante la eliminación de regiones no codificantes (intrones) presentes en el trascripto primario

Explanation:

En células eucariotas, la transcripción refiere al proceso donde un gen es usado como templado para generar un ARN mensajero (ARNm) inmaduro conocido como pre-ARNm, el cual contiene regiones cortas codificantes (exones) y regiones largas no codificantes (intrones). Durante el proceso de empalme alternativo, también conocido como splicing alternativo, este pre-ARNm sufre un procesamiento mediante el cual los intrones son eliminados y los exones son retenidos y empalmados, con lo cual el ARNm maduro final reduce drásticamente su longitud original. En el caso arriba descripto, una proteína con 70 aminoácidos resultaría de la traducción de un ARNm maduro que posee 210 bases nucloetídicas, ya que cada triplete de nucleótidos o 'codón' corresponde a un sólo aminoácido agregado a la cadena polipeptídica durante la síntesis proteica en los ribosomas.

Answer:

I think it is C but i am not sure

These findings emphasize the need of taking a drug's characteristics and administration method into account when determining its efficacy. The structural changes that can occur during drug development can have a substantial impact on the qualities of the medicine and may need to be carefully assessed to guarantee optimal activity.

The ionized carboxylate group in the original drug molecule is likely responsible for its poor oral bioavailability. This means that the drug is not easily absorbed into the bloodstream when taken orally, leading to reduced activity in vivo. However, when the drug is administered intravenously, it bypasses the absorption step and can quickly reach its target site, resulting in good activity.

When the drug is converted to an ester, it undergoes a structural change that alters its properties. This change may have affected the drug's ability to interact with its target in vitro, resulting in reduced activity. However, when the ester is administered orally, it may be more easily absorbed into the bloodstream due to its altered properties, leading to good activity in vivo.

Overall, these observations highlight the importance of considering a drug's properties and administration route when assessing its efficacy. The structural changes that can occur during drug development can have significant impacts on a drug's properties and may need to be carefully evaluated to ensure optimal activity.

To know more about drug click here:

https://brainly.com/question/13294633

#SPJ11