The correct answer is:
(A) In metaphase I, tetrad sets of homologous chromosomes stay together as they line up along the center of the cell.
Explanation:
In meiosis, homologous chromosomes pair with each other (i.e., they form tetrads) and crossing-over occur. In mitosis, not of these things occur. In metaphase I of meiosis, tetrads follow on the metaphase plate. In mitosis, there is only one state and it creates two daughter cells
Answer:
A: Shared characteristics are features or qualities that organisms or species have in common.
C: Shared characteristics can be characteristics that existed in the common ancestor and still exist in modern organisms.
D:Shared characteristics can be new characteristics that have been modified from what was found in the common ancestor.
Answer:
Carbon dioxide is a gas which is released in the atmosphere as greenhouse gas, burning of fossil fuel, released in respiration process. Rise in the levels of carbon dioxide and other gases has resulted in increase in global temperatures. Increase in carbon dioxide and temperatures are responsible for weather fluctuations and global warming.
Weather fluctuation means untolerated heat and lack of precipitation or rain. Weather fluctuations will affect seasons. Seasons are necessary for maintaining the life cycle of organisms. Inappropriate seasons due to climatic change will affect the life of living organisms.
Global warming is an issue which is mainly due to release of hot heat trapping gases from green house and other sources, increasing the atmospheric temperature. This will result in melting of ice from glaciers in world. The inhabiting animals living in the glaciers will suffer a lot from this as they cannot tolerate warm climatic conditions.
Individuals with chronic alcoholism are predisposed to intracranial bleeding and hypoglycemia secondary to abnormalities in the (c) liver.
Intracranial bleeding is the bleeding that occurs inside the skull. This leads to accumulation of blood that exerts pressure on the brain, ultimately leading to brain damage. The causes for bleeding can be various like: trauma, rupture of blood vessel, high blood pressure, or tumors.
Hypoglycemia is the condition of low levels of sugar in the blood. The most common reason for this condition is the medications taken to control diabetes. However, it can also happen due to other reasons. The general symptoms of the conditions are: palpitations, anxiety, confusion, etc.
To know more about hypoglycemia, here
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