2.6 Unique Genetic Patterns
2026-03-28 21:04
Status: #new
Unique Genetic Patterns
Calico Cats
- The orange and black hair allele are associated by a gene located on the x-chromosome. (White hair is a separate gene)
- Female Calico Cats do not exhibit co-dominance, instead they undergo a process called x-inactivation.
- In Female somatic cells, one of the two X chromosomes is condensed (inactivated)
- The condensed chromosome is called a Barr body.
- Barr bodies are observed on xx-cells
- X-inactivation is random
- This is also why calico patches are unique for every female
- ie. Punnet square
Parthenogenesis
- A reproduction method for some animals and plants
- It is when an embryo develops without the need for fertilization (ie. a egg developing without fertilization)
3 Parent Individuals
- Occurs with one egg and 2 sperm fertilization
- Mitochondrial donation therapy (MDT) is related to this
- Child has nuclear DNA from both parents, but mitochondrial DNA from a third person