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Explain the History of Animal Taxonomy?
The beginning of animal taxonomy was made by Aristotle (384-322 B.C.). He extensively studied about anatomy, embryology, habit and ecology. He was able to conclude that animals can be classified according to their way of living actions, habits and body parts. His major study includes:
i) Distinction of mandibulate from haustellate types,
ii) Winged from wingless forms among insects,
iii) Monitoring other animals like birds, fishes and whales. Orders like Coleoptera, Diptera and Psychae (now Lepidoptera) were created by him.
Which of the following defines why the vast majority of segregation errors in human patients include the two sex chromosomes (XXY, XO, XYY) or chromosome 21 (triple 21)? A. The
What is the cell division process directly related to the embryonic growth? The embryonic growth depends directly on mitosis. By this type of cell division the zygote separates
In high altitudes is it necessary for the blood to have more or less hemoglobin? In high altitudes the air is rarefied and oxygen concentration is lower than in low altitudes.
Applications : The first operation conducted was ligation of a patent ductus arteriosus through a left thoracotomy. Same approach is used for repair of coarctation of the aorta,
Inverse PCR is the variation of PCR which makes the amplification of DNA segments of unknown sequence that flank DNA segments of the known sequence possible; in short, total DNA i
How are the male gametophytes and the male gametes formed in angiosperms? In the anthers of every stamen there are pollen sacs. Within the pollen sacs there are microspore moth
What is the futile cycle The futile cycle is avoided because covalent modification, by phosphorylation, has opposite effects on the enzymes concerned with the synthesis a
Define interaction of folate with vitamin B 12 ? Vitamin B 12 : For the conversion of folic acid to folinic acid, vitamin B 12 is required. Vitamin BIZ deficiency caus
Evaluation of production diseases Generally, production diseases are acute states and respond dramatically to administration of a deficient nutrient or metabolite. The nutriti
How is HIV transmitted? What is the disease caused by this virus? HIV (human immunodeficiency virus) is supposed to be transmitted by blood, semen, maternal milk and vaginal se
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