GENETICS AND EVOLUTION
INHERITANCE AND VARIATION
|
Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
|
What causes mutations?
|
|
Mistakes in replication or environmental substances
|
|
|
The amino acids
|
|
|
Passed down by genetics
|
|
|
It’s how your born
|
Explanation:
Detailed explanation-1: -Mutations result either from errors in DNA replication or from the damaging effects of mutagens, such as chemicals and radiation, which react with DNA and change the structures of individual nucleotides. All cells possess DNA-repair enzymes that attempt to minimize the number of mutations that occur (Section 14.2).
Detailed explanation-2: -DNA polymerase can make mistakes while adding nucleotides. Most mistakes are corrected, but if they are not, they may result in a mutation defined as a permanent change in the DNA sequence. Mutations can be of many types, such as substitution, deletion, insertion, and translocation.
There is 1 question to complete.