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Which one of the following statements about human sperm is correct?
1. Acrosome has a conical pointed structure used for piercing and penetrating the egg, resulting in fertilisation
2. The sperm lysins in the acrosome dissolve the egg envelope facilitating fertilisation
3. Acrosome serves as a sensory structure leading the sperm towards the ovum
4. Acrosome serves no particular function.
The sperm lysins in the acrosome dissolve the egg envelope facilitating fertilisation
how nematodes adapt to their mode of feeding
Q. Why is the concept of a single gene as ultimateunit of inheritance inadequate to provide a unitary explanation for protein synthesis, recombination and mutation? Answer:
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The initial stage of packaging have the binding of the chromosomal DNA to histones. Whole, in chromosomes the ratio of the DNA to histones on a weight basis is around 1:1. There a
Colibacillosis of newborn animals This is the commonest disease entity of newborn farm animals. In calves the disease occurs in three forms, viz. enteric colibacillosis manif
what is the general characteristic of aschelminths
One may find leucocytosis with predominant polymorphonuclear cellular response in patients of ARF in presence of acute some throat. Throat Culture When patient presents as AR
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