(b) Write two desirable effects of hybridisation or cross breeding
Answers
The advantages of hybridization are: 1) They can increase the yield. 1) Two species combine to form the best of the organism eliminating the unwanted qualities of both the parent species. 2) They result in the formation of organisms which possess various qualities such as disease resistance, stress resistance etc
A dog hybrid is a cross between two different breeds (selectively bred varieties). Hybrids are also known as crossbreeds or crossbreds, although the term crossbreed is also used to refer to a mixed-breed dog where the breed of only one parent or grandparent is known.
A hybrid, in general sense, is any of mixed origin or composition, or the combination of two or more different things. In reproductive biology for instance, hybridization (also spelled hybridisation) refers to the process of producing offspring by mating two parents from different varieties or species.
Heterosis, also called hybrid vigour, the increase in such characteristics as size, growth rate, fertility, and yield of a hybrid organism over those of its parents. Plant and animal breeders exploit heterosis by mating two different pure-bred lines that have certain desirable traits.
In short, hybrid animals are infertile because they don't have viable sex cells, meaning they can't produce sperm or eggs. This is the case because the chromosomes from their different species parents don't match up.
In chemistry, orbital hybridisation (or hybridization) is the concept of mixing atomic orbitals into new hybrid orbitals (with different energies, shapes, etc., than the component atomic orbitals) suitable for the pairing of electrons to form chemical bonds in valence bond theory.
Crossing of two species that are from within the same genus. Examples are zebra/donkey cross resulting in an offspring called zonkey, zebra/horse cross resulting in zorse, and zebra/donkey cross resulting in zonky.
Originally Answered: Does "does hybrid vigor" pertain to humans; do children of mixed race parents have less health problems? Technically yes. Each race, is a group of people that share more hereditary genetic information, than they do with another race.
Hybrid vigor includes greater viability, faster growth rate, greater milk, egg and wool production in animals. Heterocyst is an unexpected deviation from the average of the two parental lines. The cause of heterosis the non-additive gene action (dominance, Overdominance and epistasis).
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