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patters of cleavage in most of the animal groups with spherical or almost spherical egg and little or moderate amount of yolk micro-or mesolecithal
basic planes of cleavage the basic planes along which the egg and its daughter blastomeres are divided during early cleavage area meridional plane -
planes of cleavage the ova of most of the animal groups except some specific cases like insects are spherical or nearly spherical having their own
principles governing cleavage a the nucleus and mitotic achromatic figure tend to occupy the centre of active cytoplasmic density of the dividing
influence of yolk on cleavage though biological significance of yolk is to provide nourishment to the developing embryo it is not part of the active
peculiarities of mitosis - cleavagefrom the following you will learn that the mitosis in the phase of cleavage has some striking peculiaritiesa
cleavage - development biologycleavage or segmentation is a series of cell divisions of the fertilized egg through which it is converted into a
cleavage and gastrulationeventually one spermatozoon fuses with the ovum to r restore the diploid genomic condition and activates all the potentials
fusion of egg and sperm pro-nuclei the fusion of the sperm and egg which is the beginning of the fertilization process is completed with the fusion
events after sperm and egg fusion the entry of the sperm into the egg activates the egg the activation of egg results in two types of responses1 the
events prior to the sperm-egg fusion in a number of organisms that have been studied the sperm remain immotile in the testis or in the semen the
fertilization - development biologypreviously you knew the process which leads to the differentiation of the male and female germ cells the sperm and
secondary egg envelopes these are secreted by oviducts and other accessory parts of genital organs while the egg is passing through them from ovary
primary egg envelopes these are the egg envelopes which develop in the ovary between oocyte and follicle cells in the space occupied by the
egg envelopes like any other cell all the eggs are covered by the cell membrane or plasmalemma it is with two layers of about 50 a unit membrane
cell cycle urgent question please biology expert it3939s for an exam when m-cdk gets attached to cyclin it doesn3939t just get activated
external auditors reports the audit report is the final stage in the process of an audit the terms true and fair present fairly have special
compilations- non-assurance engagementswithin a compilation engagement such the accountant is engaged to need accounting expertise that opposed to
agreed-upon procedures - non-assurance engagementswithin an engagement to present agreed-upon procedures the auditor is engaged to carry out those
reviews - assurance engagementsthe objective of financial statements of a review is to enable an auditor to state where on the essential of
definition of auditing according to the international standard on auditing isa no 200 objective and common principles governing an audit of financial
oogenesis in mammals in mammals also the oogonial cells are derived from primordial germ cells the multiplication phase that is all of the oogonial
mechanism of maturationthe basic mechanism of maturation of ovum is more or less similar in all organisms the primordial germ cells that enter into
vitellogenesisvitellogenesis is the stage where much of the oocyte growth occurs the completion of second maturation division meiosis which may occur
oogenesis oogenesis is the formation of ovum from oogonial cells that are formed in the ovary from primordial germ cells and as in spermatogenesis it