Question

After attending a class lecture on evolution, Katy came home and gathered photographs of all her possible relatives and grandparents. Afterward she made a family tree using those photographs in which she was surprised to see her resemblance to most of her relatives and grandparents.

(i) Why was there resemblance seen by Katy to most of her relatives? 

(ii) What are the laws of inheritance? Name them. 

(iii) What values are shown by Katy?

Answer 1

(i) There is a resemblance in most of the photos of her relatives because they had inherited the same genes with slight variations from their parents. 

(ii) Gregor Mendel has given laws of inheritance which explains the passing of characters from parents to their progenies. There are 3 laws of inheritance.

These are:-

a) The law of dominance 

b) The law of segregation 

c) The law of independent assortment 

(iii) Katy is a practical girl. She believes more on practical approaches that is why, after studying evolution & inheritance, she tried to find out its reality by observing it in her own family.