Answer:
The humans use this limb to grab things, body language, and sign language.
The dogs use this limb for all kinds of weight-bearing activities like walking, jumping, running et cetera.
Birds use this to fly and whales use it as flapper.
The limbs of all these four animals are the example of homologous organs that is, they all are similar in structure but adapted to perform different functions during the course of evolution.
For example, in all four organisms, the limb is made up of the same set of bones such as humerus, radius, ulna, carpals, metacarpals, and phalanges.
Homology in structure shows that they must have evolved from a common ancestor and diverge to perform different functions as an adaptation to the contrasting environment.
-Crossing over occurs between prophase 1 and metaphase 1 and is the process where homologous chromosomes pair up with each other and exchange different segments of their genetic material to form recombinant chromosomes. It can also happen during mitotic division, which may result in loss of heterozygosity.
Answer:
According to the model, the "villi" of small intestines is being damaged as an impact of celiac disease. Small intestines are responsible for absorption of nutrients and minerals from food, this occurs through villi, in case of damaged villi absorption is interfered, thus disturbing the digestive system. If the nutrients, minerals or vitamins are not being absorbed well by small intestines then they will be excreted out of the body and will not be transported to the blood and other areas, this would result in deficiency of minerals and vitamins in blood that cause weakness.
Answer:
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Answer:
Pneumonia may be defined as the medical condition in which the inflammation might occur in the lungs due to which the fluid might accumulate in the lungs. The infection might occur by the Streptococcus penumoniae bacteria.
The most likely diagnosis of this patient can be influenza. The symptoms shown by the patient like cough, fever, headache, lung pain is more common in influenza. The diagnosis can be based on the symptoms shown by the patient and no presence of the Streptococcal infection. This conditions can be worsened if the pneumonia follow the harsh influenza and this secondary infection must be monitored. The treatment that can be preferred in this patient bed rest, anti pyretic medicines and proper body fluids.
