Striped chicken breast
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WebMD does not provide medical advice, diagnosis or treatment. Bird Flu FAQ or Avian Influenza. The five freedoms for chicken keepers. Genetics is a hugely complicated subject, often made more so by the fact that it is rarely black or white, there are hundreds of shades of Gray or dominance in the middle. The well tried and tested rule that most casual chickens breeders seem to adhere to is “Like Begets Like”.
They lump four hens and a cockerel and a cockerel into a breeding pen with little thought of what they are actually doing. Specimens that lack long and careful pedigree won’t give you decent results in the long run. What determines the colour of chickens? Glossary and definition of terms used with poultry breeding:Allele -An allele is a gene that is a member of a set of genes that all belong to the same locus, or location, on a chromosome.
One of a number of possible alternative forms of genetic information at a gene locus . A member of a set of genes that all have the same location on a given chromosome. Epistasis – suppression of the effect of a gene by a non-allelic gene . A gene for trait A somehow having an effect on trait B is an example of epistasis.
A piece of DNA in a chromosome that contains the coded information for a trait. A gene is a piece of DNA that carries information about a specific trait. Gene : An inheritable characteristic attached to the chromosome. Heterosis – The deviation between the cross and mid parent means . The difference in some property, for example rate of lay, between a cross bred line and the average for the parent lines.
Autosomal: An autosome is any of the numbered chromosomes, as opposed to the sex chromosomes. In general, the gamete has only half the chromosomes of a mature individual. Mitosis: There are two types of cell division processes. In the metaphase spindle fibres emminate from the centrioles and attach to the chromosomes. In the telophase the cell wall closes and new cells are evident. The cells that initiate meiosis contain the full set of chromosomes. Which chromosomes of the original ones find their way to the gamete cells is essentially a random process.
