In selective breeding, a specific trait of the animal is considered and the gene coding for that trait is used to create new breeds. Example - cow producing lot of milk.
Genotypes are always expressed by the alleles.
Example - Genotype of Tall plants would be TT or Tt
Information is passed from parents to offsprings from the information stored in DNA.
A gender of an individual is determined by the x chromosomes of mother and X and Y chromosome of father.
X chromosome from mother and X chromosome from father would form a female and X chromosome from mother and Y chromosome from father would form a male.
DNA is located inside the nucleus of the cell
Gene is the segment of chromosome that codes for a specific protein. The non coding segment of chromososme is heterochromatin.