A rose plant obtained f rom self cross of het erozygous red has produced 200 f lowers. How many of them would be heterozygous red flowers ?
(1) 25 (2) 50 (3) 100 (4) 150

Choose the correct statement/statements from the following.

(A) Inter phase has three phases.
(B) Inter phase is the resting stage between two divisions.
(C) Inter phase is the period when genetic material makes its copy.
(D) Inter phase is the act ive phase between two divisions.

(1) A, B (2) B, C (3) A, B, C (4) A, C, D

Darwin was most influenced by Research work of

(1) Alfred Russel Wallace
(2) Herbart Spencer
(3) Mal Thus
(4) Weismann

Which of the following is an example of homologous organs is ?
(1) Our arm and a dog's foreleg
(2) Our teeth and an elephant's tusk
(3) Pot at o and runners of grass
(4) All of the above

The sex of a male child is determined by which of the following?

(1) The length of the mother's pregnancy 
(2) The length of time between ovulation and copulation
(3) The presence of an X chromosome 
(4) The presence of a Y chromosome