Question

Which of the following evidences does not favour the Lamarckian concept of inheritance of acquired characters?

(a) lack of pigment in cave-dwelling animals

(b) melanization in peppered moth

(c) absence of limbs in snakes

(d) presence of webbed toes in aquatic birds.

Answer 1

Ans=The option (b) is correct.Because this does not favour the evidences of lamarckian concept of inheritence of acquired character.

The option (a) may not be the correct because according to theory of lamarckian the cave dweller's ancestor had normal eye.Due to presence in continuous dark condition they lost their power to see.

The option (c) may not be the correct because according to lamarckian concept the snakes evolved from lizard which had two pair of wings.But due to continuous no use of limbs they become disappeared.

The open (d) may not be the correct because according to lamarckian evidences the aquatic bird like duck evolved from terresterial ancestor.Hence it confirm the presence of webbed toe in aquatic bird.