Question 1 :
In the following cross, Rr Yy x Rr Yy, the characteristics of the progeny is
(i) Round and Yellow
(i) Round and Green
(ii) Wrinkled and Yellow
(iv) Wrinkled and Green
Question 2 :
Independent inheritance of two separate traits, shape and colour of seeds in Mendel’s cross on pea plants resulted in a observable ratio of: ?
Question 3 :
Why are traits acquired during the life-time of an individual not inherited?
Question 4 :
How is the sex of the child determined in human beings?
Question 7 :
In the following cross, rr yy x rr yy ,the characteristics of the progeny is
Question 9 :
Some dinosaurs had feathers although they could fly but birds have feathers that help them to fly. In the context of evolution this means that -----------.
Question 10 :
Study of the evolution of human beings indicates that all of us belong to a single species that evolved in Africa and spread across the world in stages.
Question 11 :
Organs or features may be adapted to new functions during the course of ______
Question 13 :
The contrasting trait of seeds of a pea plant that is recessive is
Question 15 :
The more characteristics two species will have in common, the more closely they are related. And the more closely they are related, the more recently they will have had a common ancestor. TRUE or FALSE?
Question 16 :
What factors could lead to the rise of a new species?
Question 18 :
A man with blood group A marries a woman with blood group O and their daughter has blood group O. Is this information enough to tell you which of the traits – blood group A or O – is dominant? Why or why not?
Question 20 :
Two pea plants one with round green seeds (RRyy) and another with wrinkled yellow (rrYY) seeds produce $F_1$ progeny that have round, yellow (RrYy) seeds. When $F_1$ plants are selfed, the $F_2$ progeny will have new combination of characters. Choose the new combination from the following :
(i) Round, Yellow
(ii) Round, Green
(iii) Wrinkled, Yellow
(iv) Wrinkled, Green