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ERRORS IN FERTILIZATION -
1. Polyspermy - When more than one sperms are fused in an ovum, this condition is called polyspermy.
2. Polygynae - During oogenesis after the meiosis polar body I and II are not seperate, in this condition one male pronuclei fused to two female pronuclei. This condition is called polygynae.
3. Polyandry - When two male pronuclei fused with the one female pronuclei is called as polyandry, in this condition embryo is dead.
4. Gynogenesis - When sperm contact to the ova than ova is activated but pronuclei of sperm not fused to female pronuclei.
5. Partial fertilization - In this type of fertilization pronuclei of sperm fertilized to a blastomere.
6. Androgenesis - During fertilization process, pronuclei of ova if inactivated, during development process pronuclei of sperm participate.
Given a polymer backbone of H-C-C with the first carbon having 2 H atoms attached and the 2nd carbon with 3 atoms attached, a bond with a water molecule attaches to the left H atom
Minerals :- Phosphates Food Source Ubiquitous, animal products tend to be good sources Nutritional Functional role Essential nutrient: Deficiency is rare due
What is an organ that belongs to more than one organ system? One answer is the pancreas. It belongs to both the endocrine and digestive systems. Another one is bone marrow. It
Isomerases These enzymes (code EC 5) catalyze geometric or structural changes within a molecule. According to the type of isomerism, they may be called racemases
Nature of neuropsychological tests Neuropsychological tests are aids in the neuropsychological examination. The tests calculates specified psychological processes including the
Explain Kashin Beck disease caused by selenium deficiency? Kashin Beck disease was identified to affect growing children in parts of Siberian Russia and China. It is characteri
feeding mechanism of man
Explain Food Effects on Drug Excretion? Food and nutrients can alter the re-absorption of drugs from the renal tubes. Urinary acidity affects drug re-absorption from the renal
is a cyclone density dependent or independent
Syncytial Theory - Metazoa This theory suggests that the ancestral metazoan was at ,first Syncytial in structure but later became cellularised by formation of cell membranes
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