Tutor profile: Rachel B.
Explain Mendelian genetics and why he chose to study the pea plant.
Mendel was a monk who studied genetics using pea plants. He chose to study pea plants because they have perfect flowers which means that pea plant flowers have both male and female parts. Using a perfect flower allowed Mendel to cross pollinate plants of his choosing. Mendelian genetics refers to the conclusions that came from his studies. One conclusion is the law of segregation that states that each pair of alleles segregates independently during gamete formation. Mendel's second law is the law of independent assortment. This law states that genes do not influence each other and each combination is equally likely.
Explain the trends of atomic radius on the periodic table.
The periodic table has elements that are arranged by atomic number and similar physical and chemical properties. The atomic radius of the elements increases with the periodic number. This is because more shells are filled on elements with larger periodic numbers and each successive shell is larger. Moving across a period causes the atomic number to decrease with the increasing atomic number due to nuclear charge. The nuclear charge is the positive charge that an electron experiences from the nucleus. Therefore, the nuclear charge is reduced because of the shielding effect from electrons around the nucleus.
What are characteristics of a good essay?
There are many characteristics that a good essay should possess. First, the content of the essay needs to be accurate and discussed in a way to deliver the intend affect on the intended audience. Secondly, the essay should be broken down into introduction, body and conclusion. This structure helps the essay to flow. Finally, a good essay needs to have good mechanics. Grammar and sentence structure should be correct to give credit ability to the essay. These are the three main characteristics that a good essay should possess.
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