Eye colour in humans is controlled by genes. The dominant allele of the gene (B) produces brown eyes. The recessive allele (b) produces blue eyes. A homozygous blue-eyed woman married a homozygous brown-eyed man, and they had three children all with brown eyes. a) Copy the following genetic diagram into your answer book, and i) Show the genotypes of the parents; ii) Complete the following grid using the letters B and b. Woman ..... в Man - b) Explain why all of the children had brown eyes.

Learning is defined as a relatively permanent and irreversible adaptive change in behavior. It always results from experience. The ability of an organism to store and recall the effects, sensations, and knowledge gained through learning and experience is…