Definition and Significance of Mutation

Q.

Mutation is any random genetic change that results in new and different traits. True or false?

1. True

2. False

Q.

__ causes gradual change in a species and leads to its evolution.

Q. Which of the following is true with regard to mutations?

1. It is a gradual change that happens in the genome of an organism
2. It is typically a sudden change in the genome resulting in sudden changes in species
3. It is a gradual change in the chromosome structure alone
4. It a sudden change in the genome of an organism, leading to gradual changes in the species

Q. Forecoming generations are less adaptive than their parental generation due to:

1. Natural selection
2. Mutation
3. Genetic drift
4. Adaptation

Q. Point mutation involves :

1. Deletion
2. Insertion
3. Change in single base pair
4. Duplication

Q. Mutations can be artificially or genetically .

1. increased
2. inherited
3. induced
4. modified

Q. The sudden heritable genetic changes in an organism are called mutation.

1. False
2. True

Q. Which of the following(s) is/are true about mutations?

1. Mutations can be inherited.
2. Mutations eventually lead to evolution.
3. Even a single nucleotide substitution can be termed mutation.
4. Mutations can never be acquired from the environment.

Q. In sickle cell anaemia, which of the sequences get changed?

1. Both A and B
2. $\alpha$-chain
3. $\beta$-chain
4. None of the above

Q. Discontinuous variations are

1. Mutations
2. Acquired characters
3. Essential features
4. Nonessential features