Wings of pigeon, mosquito and bat show
atavism
mutation
divergent evolution
convergent evolution
F2-generation is produced by
selfing the parents.
recessive cross between individual parents.
crossing F1-progeny with one of the parents.
selfing the progeny of two individual parents.
Genetic variation arises by
nucleolus
recombination
both '2' and '3'
'Mutation theory of evolution' was given by
Helmont
Pasteur
Haldane
Hugo de Vries
An example of homologous organ is:
Our arm and a dog’s foreleg
Our teeth and an elephant’s tusks
Potato and runners of grass
All of the above
The recessive character in Mendel's pea plant was
yellow pod
round seed
green pod
axial flower
Chromosomes are made up of
proteins
DNA
both (1) and (2)
RNA
The scientist Hugo de Vries worked on which of the following plant?
Pisum
Lathyrus
Mirabilis
Oenothera
Which of the following causes mutation ?
X-rays
Colchicine
Cosmic rays
Crossing over
How many pairs of contrasting characters of pea were selected by Mendel for cross fertilization?
Six
Seven
Five
Twelve
