Read the following statements (A-D) and state true (T) and false (F):
A. Deletions and insertions of base pairs of DNA cause frame shift mutations.
B. An example of point mutation is sickle cell anaemia.
C. Mendelian disorders are mainly determined by alteration or mutation in the single gene.
D. Haemophilia, colour blindness and cystic fibrosis are sex-linked recessive disorders.
Important Questions on Principles of Inheritance and Variation
Match the following lists:
| List-I | List-II | ||
| Crop bred by hybridization | Resistance to disease | ||
| (A) | Wheat | (I) | Block rot and curl blight black rot |
| (B) | Brassica | (II) | Mosaic virus, leaf curl |
| (C) | Cauliflower | (III) | Leaf and stripe rust, hill bunt |
| (D) | Cowpea | (IV) | White rust |
| (V) | Bacterial blight |
The correct match is:
Which one of the following is NOT enriched by vitamin C by IARI?
Arrange the following steps in plant breeding in an order
(a) Evaluation and selection of parents
(b) Selection of testing of superior recumbents
(c) Collection of variability
(d) Testing, release, commercialization of new varieties
(e) Cross hybridization among the selected parents
I) Pusa swarnim - Brassica - White rust resistance
II) Pusa gaurav - Brassica - Fruit borer resistance
III Pusa sawani - Bhindi - Fruit borer resistance
IV) Pusa sadabahar - Chilli - Leaf curl resistance
Match the following lists:
| List | List | ||
| A) | Change in single base pair of DNA | Recombination | |
| B) | Deletions of base pairs of DNA | Genetic map | |
| C) | Generation of non-parental gene combination | Point mutations | |
| D) | The frequency of recombination between gene pairs on the same chromosome | Frame-shift mutations |
The correct match is
Study the given table and identify a, b, c, d, e and f:
