What are some examples of purebred genotypes
Genetics is a branch of biology, i.e. a science that deals with the laws of heredity. Genetics make it possible to specifically breed certain traits (e.g. black fur) and to breed away other traits.
The rabbit has 44 chromosomes, if passed on to the offspring, they get half the chromosome set (22 chromosomes) from the mother and half from the father, so that they also have 44 chromosomes again (which chromosomes they get from whom, however, remains left to chance). The closer the parent animals are related, the less different their chromosomes are, i.e. the less choice of chromosomes there is for the offspring and they are more similar than in less related rabbits.
Genotype and phenotype
In genetics, it is important to distinguish between genotype and phenotype. The genotype is the hereditary disposition of the rabbit (which genes and hereditary disposition they carry), the phenotype is the appearance / appearance, i.e. the pronounced genes and hereditary disposition. A rabbit can be black (phenotype) but still carry the genetic make-up for white fur (genotype) and, when mated, may also produce white babies.
Purebred rabbits and mixed breeds
The more homozygous a rabbit, the easier it is to predict what kind of offspring it will have.
If a rabbit is purebred, it is also referred to as homozygous, a mixed breed is heterozygous.
Recessive and dominant
A trait can be inherited in a recessive or dominant manner. A dominant allele (an allele is the expression of a gene) always overlays a recessive gene.
In color theory, for example, the wild color is inherited as the dominant inheritance, i.e. if you cross a pure natural wild-colored rabbit with a pure natural black, white or other colored rabbit, the offspring will look phenotypically wild-colored (but can genotypically carry the other color).
Mutations and modifications
In nature there are always sudden changes in the appearance of rabbits. The cause for this can be a mutation. If the change only affects the rabbit's appearance, but not its genetic make-up, it is a modification (somatic mutation). Such changes are not inherited. If the genetic make-up is also affected by the mutation, it will continue to be inherited and is called a germline mutation.
Environmental influences can significantly increase the mutation rate; these are called mutagens. The mutagens include UV, radioactive and X-rays, a temperature shock or chemicals (e.g. an environment that is extremely polluted by chemicals, polluted feed, etc.).
Mutations can be positive or negative. Many coat colors are the result of a mutation, but also some hereditary diseases.
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