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Sexually-transmitted diseases
Many travelers have new sexual contacts during their journeys and are at increased risk for acquiring sexually transmitted diseases including HIV, particularly when visiting developing countries with a high incidence of STDs in the local population. Hepatitis B is the only STD for which a vaccine is available. Travelers should be aware of this risk and of safe sex practices for disease prevention; use of condoms should be emphasized.
In a follow up to Alfred Sturtevant's studies on recombination in the fruit fly, Seymour Benzer used complementation studies of bacteriophage mutants to verify where recombination
Why do vestigial structures persist in modern organisms? Explain the evidence that indicates that species evolve over time. The environment will not select for or against
Q. What is the menstrual cycle? The menstrual cycle is the periodic succession of interactions between the organs and hormones of the female reproductive system after the begin
Do octopus and squids have exoskeleton? Octopus and squids normally do not produce external shell (some squid species can have an internal shell). One cephalopod group, the nau
Q. What are worm infections? The Worm infections are human diseases caused by nematodes(roundworms) or platyhelminthes (flatworms).
CELL COAT (GLYCOCALYX) Present in Protists and animal cells. Usually made of oligosaccharide side chains of glycolipids and glycoproteins. Cell coat has very charged t
SKI N GRAFTING - Skin for grafting is taken from another part of body of the same persons. Now it is possible to grow a sheet of skin in culture from a small piece of skin
Describe about the stomach
Explain the Treatment of iron deficiency anaemia? Oral iron is the preferred method of treatment of IDA. The dosage is decided depending on the severity of the condition. Gener
How does photoperiodism affect the flowering of some plants? The Flowering is an easy and typical to observe example of photoperiodism. Most of flowering plants flower only dur
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