Science- Biology- Heredity and Evolution

Those organs which have different basic structure but have similar appearance and perform similar functions are called

Which of the following characters can be acquired but not inherited?

In humans if gene B gives brown eyes and gene b gives blue eyes, what will be the colour of eyes of the persons having combinations
(i) Bb and (ii) BB?

A cross between two individuals results in a ratio of 9 : 3 : 3 :1 for four possible phenotypes of progeny. This is an example of a

Which of the following decides the sex of the child?

Pure-bred pea plant A is crossed with pure

Identify the two organisms which are now extinct and are studied from their fossils.

The human species has genetic roots in

Which of the following is the ancestor of 'Broccoli'?

The process of evolution of a species whereby characteristics which help individual organisms to survive and reproduce are passed on to their offspring and those characteristics which do not help are not passed on is called