THE MOLECULAR BASIS OF INHERITANCE
GENE MUTATION
|
Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
|
|
|
The mutation is beneficial.
|
|
|
The mutation is harmful.
|
|
|
The mutation is neutral.
|
|
|
The mutation will be passed down to the person’s offspring.
|
Detailed explanation-1: -A mutation occurs to a gene in a body cell that results in tumors growing along a person’s nerves or under the skin. They increase the chances of the person having learning disabilities. Analyze the impact of this mutation on the organism. The mutation is beneficial.
Detailed explanation-2: -If a mutation occurs in a germ-line cell (one that will give rise to gametes, i.e., egg or sperm cells), then this mutation can be passed to an organism’s offspring. This means that every cell in the developing embryo will carry the mutation.
Detailed explanation-3: -Mutations can be of many types, such as substitution, deletion, insertion, and translocation.
Detailed explanation-4: -A gene mutation is the change in the base sequence of DNA that results in the formation of a new allele. It has no effect because the genetic code is degenerate, does change the amino acid but no effect on the tertiary structure, the new allele is recessive so it doesn’t influence the phenotype.
Detailed explanation-5: -Sometimes, gene variants (also known as mutations) prevent one or more proteins from working properly. By changing a gene’s instructions for making a protein, a variant can cause a protein to malfunction or to not be produced at all.