Search results
Results from the WOW.Com Content Network
In species that use the XY sex-determination system, parthenogenetic offspring have two X chromosomes and are female. In species that use the ZW sex-determination system the offspring genotype may be one of ZW (female), [30] [31] ZZ (male), or WW (non-viable in most species, [33] but a fertile, [dubious – discuss] viable female in a few, e.g ...
This was done by crossing a European honey bee and an African bee, but instead the offspring became more aggressive and highly defensive bees that have escaped into the wild. [dubious – discuss] [citation needed] Order Blattodea. Family Rhinotermitidae. Genus Coptotermes. The Asian termite and Formosan termite are an invasive hybrid in ...
A mule is a sterile hybrid of a male donkey and a female horse.Mules are smaller than horses but stronger than donkeys, making them useful as pack animals.. In biology, a hybrid is the offspring resulting from combining the qualities of two organisms of different varieties, subspecies, species or genera through sexual reproduction.
Their experiments consisted of cross-breeding Drosophila mutants and documenting offspring. Another highly regarded figure in Drosophila research was Theodosius Dobzhansky , who invented the use of genetic markers and used them to study hybrid sterility between Drosophila pseudoobscura and Drosophila persimilis . [ 1 ]
Animals with few offspring can devote more resources to the nurturing and protection of each individual offspring, thus reducing the need for many offspring. On the other hand, animals with many offspring may devote fewer resources to each individual offspring; for these types of animals it is common for many offspring to die soon after birth ...
Viable inbred offspring are also likely to be inflicted with physical deformities and genetically inherited diseases. [69] Studies have confirmed an increase in several genetic disorders due to inbreeding such as blindness, hearing loss, neonatal diabetes, limb malformations, disorders of sex development , schizophrenia and several others.
The hybrids between both species are not sterile, in the sense that they produce viable gametes, ovules and spermatozoa. However, they cannot produce offspring as the sperm of the hybrid male do not survive in the semen receptors of the females, be they hybrids or from the parent lines.
The mean of the two parental values for a quantitative trait in an individual offspring or in a specific cross. [8] migration mimicry The process by which an organism evolves to resemble another object, often an organism of another species. Mimicry can also occur between individuals of the same species.