DNA is the basic unit of inheritance
A gene is the basic physical and functional unit of heredity. Genes are made up of DNA. Some genes act as instructions to make molecules called proteins.
Prophase is the first phase is when the two sister chromatids pair up and the nucleoli disappears. Prometaphase is the second phase where the microtubules begin to separate from each other, each pair of microtubules attach to the kinetochores and some nonkinetohore microtubules interact with those from the opposite pole of the spindle. Metaphase is the third phase where the chromosomes are lined up on the invisible line of the metaphase plate. Anaphase is the fourth phase where the two daughter chromosomes begin to separate from each other to opposite poles. Telophase is the last phase where the two daughter nuclei form creating two identical nuclei.
Answer:
Because male chromosomes are XY, compared to females having two Xs (XX). If a female has an x-linked disorder to one of their Xs, the other X will be able to cover for that shortcoming. Males on the other hand do not have another X, thus, those disorders are expressed.
They bind to MHC class I molecules and T-cell receptors
Following influenza infection or receipt of a flu vaccine, the body's immune system develops antibodies that recognize and bind to “antigenic sites,” which are regions found on an influenza virus' surface proteins
<h3>What are Antibodies ?</h3>
When the immune system of the body recognises dangerous compounds, known as antigens, it produces a protein called an antibody. Microorganisms (bacteria, fungi, parasites, and viruses) and chemicals are examples of antigens.
- Proteins called antibodies defend you when your body comes into contact with an unwelcome chemical. Antibodies, which are made by your immune system, bind to these foreign chemicals and drive them out of your body. Antibody is also known as immunoglobulin.
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Answer:
It was discovered that the organisms in each of the five kingdoms have a different method of obtaining nutrients and are therefore fundamentally different.
Explanation:
New kingdoms were needed that reflected our growing knowledge of the differences between living organisms.