Heredity -the term means
The biological process whereby genetic factors are transmitted from one generation to the next, The total of inherited attributes. This is the process by which an offspring cell or organism acquires or becomes predisposed to the characteristics of its parent cell or organism. Through heredity, variations exhibited by individuals can accumulate and cause a species to evolve. The study of heredity in biology is called genetics.
Types of heredity
- Locus–locus interactions
Epitasis with other loci Gene coupling with other loci Homozygosis lethal factors Semi-lethal factors
- Sex-linked interactions
Sex-linked inheritance Sex-limited phenotype expression Inheritance through the maternal line Inheritance through the paternal line
- Coincidental and environmental interactions
Pen trance Expressivity Maternal or paternal imprinting phenomena
- Correlation genotype–phenotype
Dominant Intermediate Recessive
- Involved chromosomes
Autonomic – loci are not situated on a sex chromosome Gonosomal – loci are situated on a sex chromosome o X-chromosomal – loci are situated on the X chromosome (the more common case) o Y-chromosomal – loci are situated on the Y chromosome Mitochondrial – loci are situated on the mitochondrial DNA
- Number of involved loci
Monogenetic – one locus Oligogenetic – few loci Polygenetic – many loci