It is particularly important to improve our understanding of the factors regulating vegetative reproduction, particularly if trade-offs with sexual reproduction
are involved, since for many perennial prairie species it is the primary mode of reproduction (Benson et al.
In almost all eukaryotes without sexual reproduction
and eukaryotes with sexual reproduction
, mitochondria and plastids are thought to divide according to the methods as described above.
Other biologists have also suggested that the gene exchange done by sexual reproduction
also means that siblings are not exact copies of one another and are therefore less likely to compete directly with one another for survival.
Forests at various stages of regeneration post-logging vary markedly in moisture levels, light and temperature regimes and nutrient availability, thus cues for sexual reproduction
may vary with time or, in fact, be absent.
With all-males or all-females populations, the energy of the fish is again redirected to growth instead of sexual reproduction
The parameters of the same biologic attributes as in the sexual reproduction
experiment were recorded as described above.
Milner held that the European peoples were marching towards modern democracy by getting rid of genetic manipulation, sexual reproduction
, artificial insemination and gender laws in modern times.
Through growth plants become able to store resources and after use them to produce the necessary organs to sexual reproduction
(Weiner et al.
Geneticists long have bet on the success of sexual reproduction
over asexual reproduction based, in a large part, on the process known as Muller's ratchet, the mechanism by which a genome accrues deleterious and irreversible mutations after the host organism has lost its ability to carry out the important gene-shuffling job of recombination.
in grass, in contrast, involves the propagation of new plants in sites that are not necessarily spatially contiguous with parent plants.
Sex education is instructions on issues related to human sexuality including human anatomy, sexual reproduction
, sexual activity, emotional relations and responsibilities, sexual abstinence and birth control.
Washington, Jan 06 ( ANI ): Researchers have discovered a 100-million-year old piece of amber which reveals the oldest evidence of sexual reproduction
in a flowering plant- a cluster of 18 tiny flowers from the Cretaceous Period.
TEHRAN (FNA)- A 100-million-year old piece of amber has been discovered which reveals the oldest evidence of sexual reproduction
in a flowering plant -- a cluster of 18 tiny flowers from the Cretaceous Period -- with one of them in the process of making some new seeds for the next generation.
However, little is known regarding reproduction of the species beyond an indication of sexual reproduction
suggested by COHEN (1995).
However, it is also one of the most paradoxical, given the ultimate costs of sexual reproduction
(Maynard Smith 1971; Williams 1975; Lloyd 1980; Michod & Levin 1988; Crow 1994; Misevic et al.