How does a somatic cell mutation differ from a germ cell mutation?
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B) Each cell has the same DNA, so DNA does not play a role in differentiation.
Although the cells within an organism contain the same DNA, cellular RNA has a more important role than DNA in cell differentiation.
DNA stores hereditary information for a very long period and provides the blueprint for making a specialized cell. Whereas the RNA uses that information given by the DNA and involves itself in production of that specialized type of cell in the process of cell differentiation.
The process of gene expression is vital process where the information to make a special type of cell is used to produce the cell. There is influence of environmental factors also, but it is not the primary cause of cell differentiation.
The main difference between somatic mutations and inherited mutations is that inherited mutations exits in all cells in the body and somatic mutations only exits in the cell type that mutated.
Inherited mutations are present from birth, come from a parent, are irreversible and can affect all cells of the body. They are called "hereditary" because, being present in a gamete, they are transferred to the offspring.
Somatic mutations are acquired in already developed organisms and can appear at any time due to multiple factors. As a consequence of this, a single cell line is affected, either by defects in cell division or by influence of environmental factors. These mutations do not pass from parents to children.
Inherited and somatic mutations
The changes in the single base or nucleotide in the nucleotide sequence and thus changing its complementary base also it is called as point mutations, while when there are insertions or deletions of more than one base pair in the nucleotide sequence it is known as frameshift mutations.
Somatic cell mutation only affects the cells that cell gives rise to via mitosis...so a damaged skin cell only gives rise to other damaged skin cells. A mutation in a germ cell, however, is passed on to the progeny. So if the mutation is in the egg or sperm, the offspring will then carry the mutation.
So, only germ cell mutations are inherited.
The correct answer is option C.
In a multi-cellular organism, all cells contain same DNA content. However, not all genes (protein coding sequence of the DNA) are expressed in all the cells.
During development or growth or repair different cells express different sets of genes at a time and repress other genes.
The same is explained in the option C.
Cells do not use the same sections of DNA, that is, genes in the same proportions, that is, expressiveness at the same time in development, which leads to differentiation.
For example, different blood cells are formed or differentiated from the same stem cells. It is because different cells express different genes during the development. consequently, different proteins or traits are developed in different cells which ultimately leads to the production of differentiated cells.
It can be a genetic mutation or it can be a change in a strategy. ... In this definition a mutation is any evident change (regardless of its effect on success), and adaptation is a change that made the group thrive in a given circumstance or environment.
mutation can be a change in strategy and adaption is a change that made the group thrive in a given circumstance or environment.
Each Cell has the same DNA
All the cells in a person's body have the same DNA and the same genes. However, the difference between cells in different tissues and organs is that the "expression" of the genes differs between cells. For example, liver cells have different proteins than skin cells, even though their DNA is the same.
So your answer is B
The right option is; C. Inherited mutations exist in all cells in the body and somatic mutations only exist in the cell type that mutated.
Inherited mutations are gene mutations that exist in almost every cell in the body throughout an individual’s life. Inherited mutations are inherited from a parent and can also be transmitted. They are also called germline mutations because they exist in the parent’s egg or sperm cells (gametes).
Somatic mutations are gene mutations that exist in only certain cell types that are mutated, not in every cell in the body and it take place at some time during an individual’s life. Somatic mutations are not inherited and cannot be passed. They are caused due to environmental factors (such as cigarette smoke or ultraviolet (UV) radiation) or due to error during DNA replication.