AP BIOLOGY

THE MOLECULAR BASIS OF INHERITANCE

GENE MUTATION

Question [CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
When several genes are affected by a mutation, it is probably a result of a ____ mutation.
A
Mutagen
B
Chromosomal
C
Point
D
Harmful
Explanation: 

Detailed explanation-1: -Genetic mutations are changes to your DNA sequence that happen during cell division when your cells make copies of themselves. Your DNA tells your body how to form and function. Genetic mutations could lead to genetic conditions like cancer, or they could help humans better adapt to their environment over time.

Detailed explanation-2: -Chromosome mutations can result in changes in the number of chromosomes in a cell or changes in the structure of a chromosome. Unlike a gene mutation which alters a single gene or larger segment of DNA on a chromosome, chromosome mutations change and impact the entire chromosome.

Detailed explanation-3: -In biology, a chromosomal mutation is the mutation of the chromosomal segments of the DNA strands. This can occur when the number of chromosomes or chromosome sets (ploidy) increases or decreases in a genome as well as when changes in chromosomes structure occur.

Detailed explanation-4: -Genetic mutations include substitutions, insertions, or deletions, while chromosomal mutations include duplications, deletions, or inversions. Spontaneous mutations occur as mistakes in copying DNA, while induced mutations are caused by external factors like radiation or chemicals.

There is 1 question to complete.