Upon fertilization, two gametes become a what? Fill in the blank. Spermatids mature into spermatozoa by the process of ___. What is the process of shedding of an unfertilized egg and uterine lining that takes place in a female body? What are...
The process of meiosis results in the production of haploid gametes. The process of cell division in which diploid cells are converted to haploid gametes is called. Describe double fertilization in angiosperms and how fruits are formed. Des...
The variation of size is a dynamic process at different stages of sex chromosome evolution. The two vertical lines in the proto W chromosome represent the two sex determination genes. The estimated sizes of sex chromosomes are: A Strawberry, Z = W = ∼12 Mb; B Poplar, Z =...
During the normal process of spermatogenesis, the gonocytes as spermatogonia B cross the BTB and reach the adluminal compartment [Stanton, [148], [149], [150], [151]]. This BTB constitutes a sort of ‘dynamic fence’ corralling a basal compartment that contains the stem cells, i.e. ...
the case of spined loaches suggests that such a process is likely controlled by taxon-specific mechanisms since in closely relatedCobitis taenia-elongatoideshybrid complex, diploid and triploid hybrids maintain the same type of gametogenic alteration, i.e., premeiotic genome endoreplication. Detailed...
Although cattle are the mammalian species with most global biomass associated with a huge impact on our planet, their immune system remains poorly understood. Notably, the bovine immune system has peculiarities such as an overrepresentation of γδ T cel
: bindin; lysin; sexual conflict; reinforcement; positive selection; fertilization; heterozygote advantage 'Two things that are certain in life are death and taxes.' (Benjamin Franklin 1789) Before either death or taxes, generally comes fertiliza- tion, the interaction and union of two gametes. ...
uncovered a phenomenon that creates a segmental rather than a continuous partial tetraploidy. In the sterlet, most chromosomes or chromosome arms were found to be in either a diploid or a tetraploid state. The loss of entire chromosomes can be seen as a fast stochastic process for rediploid...
, although these numbers might be considered with caution due to the limited number of adult biological replicates (i.e. 3 adults). This suggests that the bulk of the community composition may be transferred during the brooding process, although there is still some stochasticity in the process....
Centromeres are key elements in this process. They are the site for the assembly of the kinetochore, the complex protein structure required for the interaction between spindle fibers and chromosomes, and for recruiting signaling components that ensure proper kinetochore-microtubule attachments (reviewed ...