Mendel has observed Tallness as a dominant character in the garden pea plant.

Similarly, tongue rolling is a dominant character in man. In a group of 60 students,

45 can roll their tongue and 15 are non-rollers.

i) In the above context, calculate the percentage of dominant and recessive characters.

The correct statement about Neanderthal man is:

The inheritance of characteristics through generation is called “heredity”. In Mendel's Pisumsativum plant, the genetic material responsible for heredity is __________.

The inheritable characters vary in different species and within the same species. Name the variation in the following cases.

The eye colour among the human beings are varied as blue, black, brown, green, etc.

i) This is called as _______variation.

The dentition in the rabbit and the elephant are not the same.

ii) This is called as __________ variation.

Sexually reproducing organisms produce offspring with marked, significant and visible variation. Asexually reproducing offspring show minor variations.

i) Do you agree with the above statements?

ii) Among the following organisms point out the asexually reproducing organism.

(Cockroach, Euglena, Earthworm and Bird)