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Why did Mendel choose peas for his experiments?

Mendel set out to investigate the patterns of inherited traits from parent to offspring during a period of eight years in the mid-1800s, publishing his work in 1866. His work involved selective cross-breeding of the pea plants across several generations with a view to observing inherited traits.At the time, it was believed that the traits of both parents blended in their offspring. What Mendel found during his research, however, contradicted that theory. He found that certain traits appear in only two versions, with no intermediate or blended version. The pea flowers, for example, were either ..

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What is the definition of solute potential?

Solute potential can reduce water potential because it takes some of the water's potential energy. Water potential is defined as the measure of potential energy in water. The solute potential decreases when the solute's concentration increases because the addition of the solute decreases the potential energy of the solution. Water moves from areas of higher water potential to areas of lower water potential until equilibrium is achieved.

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What is the purpose of calibration?

A device that has been calibrated is able to measure in the scale most appropriate for the job, so the information is reliable. Some properties, such as viscosity, flammability, and thermal conductivity, are especially difficult to measure. The use of the proper units in calibration assures that the instrument is measuring what is intended.\nCalibration is essential for guaranteeing that measurements are consistent in several ways. When making decisions, it is important to know that information is dependable even when it is collected over a period of time or by different operators. Also, locat..

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How many Jupiters could fit inside the sun?

Jupiter is the largest planet in the solar system, and it could hold all the other planets inside its atmosphere. According to one leading scientific theory, Jupiter is actually a failed star. Had the planet been 80 times larger, hydrogen fusion would have begun in the core of Jupiter, and a brown dwarf star would have been born instead of a planet.

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What is the molecular weight of potassium?

Potassium's low molecular weight means that although it is the seventh most common metal on Earth, it only makes up 1.5 percent of the Earth's crust's weight. Because it is so reactive, it is never found alone in nature; it is always bonded with something else. Pure potassium can ignite when exposed to large quantities of water. It must be stored under argon or mineral oil to prevent oxidation upon exposure to open air.

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How far can the human eye see?

The absolute threshold for a person to perceive an object is for the eyes to receive between 54 and 148 photons. Based on the photon absorption rate of the rod cells in the human eye, between five and 14 rod cells are required to be stimulated for the brain to perceive an object. With the brightness of a candle flame and the rate that it dims according to distance, this means that the human eye can perceive a dim candle flame up to 30 miles away and brighter lights even further than that.

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How do you convert 65 degrees Celsius to Fahrenheit?

Multiply by nineThe first step is to multiply the Celsius temperature by 9. In this equation, you multiply 65 by 9, resulting in 585. Divide by fiveNext, you divide the answer you got in the previous step by 5. Therefore, divide 585 by 5, which gives you 117. Add 32Because Fahrenheit sets the freezing point at 32 and Celsius sets it at 0, you must add 32 to the answer from the previous equation. 117 plus 32 gives you 149, which completes the equation. That is, 65 degrees Celsius is equal to 149 degrees Fahrenheit. Reverse the process to convert from Fahrenheit to CelsiusTo convert from Fahrenh..

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Where is RNA made?

Evolutionary biologists think that RNA preceded DNA as genetic material. However, RNA is less chemically stable than DNA. Over millions of years, DNA supplanted RNA as a repository of genetic information. All cellular life forms contain DNA genomes.\nVestiges of this RNA-dependent world survive, however. Many viruses, including influenza and HIV, contain RNA genomes. More importantly, ribosomal RNA catalyzes the formation of peptide bonds during protein synthesis. Protein production would be impossible without RNA to carry out this vital step.

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What percentage of the Earth is covered in water?

Humans use less than 1 percent of the Earth's freshwater. Aside from the water covering the Earth, water is also found in air in the form of water vapor, in aquifers, in ground soil in the form of soil moisture and in living organisms. The water covering the Earth's surface plays a crucial role in weather and climate systems.

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What is a polar molecule?

One of the most familiar and common polar molecules on Earth is water. In water, two hydrogen atoms are bonded to one oxygen atom. However, the hydrogen atoms bond at an angle less than 180 degrees, resulting in an oxygen side and a hydrogen side of each molecule. The oxygen atom has a greater electronegativity than the hydrogen atoms and so receives a greater share of the molecule's shared electrons. This means that the hydrogen side is more positively charged than the oxygen side. Water molecules in close proximity will tend to align next to each other with each oxygen side facing the h..

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