AP BIOLOGY

HEREDITY

MUTATIONS

Question [CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
In order for a mutation to be passed on from parent to offspring, the mutation must occur in ____
A
somatic cells
B
gametes
C
brain cells
D
any cell of the body
Explanation: 

Detailed explanation-1: -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-2: -If a parent carries a gene mutation in their egg or sperm, it can pass to their child. These hereditary (or inherited) mutations are in almost every cell of the person’s body throughout their life. Hereditary mutations include cystic fibrosis, hemophilia, and sickle cell disease.

Detailed explanation-3: -Germline mutations (that occur in eggs and sperm) can be passed on to offspring, while somatic mutations (that occur in body cells) are not passed on.

Detailed explanation-4: -Can I inherit a mutation? You can inherit germline genetic mutations. In this type of mutation, the DNA change happens in reproductive cells (egg or sperm). The sperm and egg pass from parents to their children, so the mutation is inherited.

Detailed explanation-5: -Mutations can occur in either cell type. If a gene is altered in a germ cell, the mutation is termed a germinal mutation. Because germ cells give rise to gametes, some gamete s will carry the mutation and it will be passed on to the next generation when the individual successfully mates.

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