5. Gene
• Gene is the hereditary determining factor and it consists of a
continuous segment of DNA.
the gene occupies in a specific
position on the chromosome
called locus (plural loci).
6.
7. Structure of gene
• Made up of a long strand of DNA
• With coding sequences called
Exons and intervening non
coding sequences called introns
32. Genetic disorders
•a gross chromosomal abnormality involving the
addition or subtraction of an entire chromosome
or set of chromosomes.
•A genetic disease is any disease caused by an
abnormality in the genetic makeup of an
individual.
33. Inheritance
• Passing of genetic informations from one generation to other
generation
• Types
1. Dominent inheritance
2. Recessive inheritance
Autosomal
Sex linked
3. Sex linked inheritance
34. •Single gene inheritance is also called Mendelian
or monogenetic inheritance.
•Changes or mutations that occur in the DNA
sequence of a single gene cause this type of
inheritance.
•single-gene disorders. These disorders are
known as monogenetic disorders (disorders of a
single gene).