THE MOLECULAR BASIS OF INHERITANCE
DNA MAKES RNA MAKES PROTEIN
|
Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
|
|
|
changes in somatic cell DNA are homozygous recessive
|
|
|
offspring typically reject parental somatic cells
|
|
|
mutations must occur within the RNA codons to affect offspring
|
|
|
only changes to gamete DNA can be inherited
|
Detailed explanation-1: -The change to a person’s DNA during a somatic mutation happens after fertilization in any cell of their body that isn’t a sperm or egg cell (germ cells). Cells continuously copy and replace themselves in humans. If a mutation occurs, all cells that form from that affected cell will have that mutation in its DNA.
Detailed explanation-2: -Somatic mutations are a normal part of aging and occur throughout an organism’s life cycle either spontaneously as a result of errors in DNA repair mechanisms or a direct response to stress. Mutations occurring early in development can cause mosaicism within the gene line, impacting organism development.
Detailed explanation-3: -Somatic mutations can give rise to cancer (9), as well as noncancerous diseases. Noncancerous somatic mutations that occur during development may affect cell proliferation, as would be the case in cancer, or they may simply alter cellular function without causing a proliferative effect.
Detailed explanation-4: -Answer and Explanation: The correct statement about somatic mutations is (e.) They cannot be inherited. A somatic mutation is an alternation in the normal sequencing of the genetic material in somatic cells.