Question

Mutations are changes in the DNA of an organism. Some mutations are harmful; however, a few mutations can create a benefit for the organism. For example, a beneficial mutation can be observed when changes in ____________. the CFTR gene results in cystic fibrosis LRHP5 results in osteoporosis red blood cells resulting in sickle-cell anemia a plant's taste results in herbivores selecting another energy source

Answer 1

Beneficial mutations can lead to changes that enhance an organism's chances of survival and reproduction, aiding in adaptation and evolution. Examples include plant taste changes that deter herbivores or genetic mutations like the CCR5 gene mutation granting HIV resistance.

Step-by-step explanation:

A beneficial mutation can be observed when changes in an organism's characteristics result in increased survival or reproductive success. For example, a mutation could lead to a change in a plant's taste which makes it less desirable to herbivores, thus allowing the plant to be less likely to be eaten and more likely to reproduce. Another example is the mutation in the human CCR5 gene, which confers resistance to HIV to individuals carrying this mutation. Such beneficial mutations are crucial for evolution, as they provide a mechanism for species to adapt to their changing environments.

Mutations can have various effects, ranging from harmful to neutral, to beneficial. While many mutations may have no apparent effect or can be detrimental, the select few that do offer an advantage can help an organism to adapt and thrive in its environment. Over time, through the process of natural selection, these beneficial mutations may become more prevalent within a population.

Answer 2

Beneficial mutations are DNA changes that help an organism adapt to its environment, improve survival, or reproductive success. Examples include the CCR5-Δ32 deletion which provides HIV resistance in humans, and changes in plant taste that deter herbivores.

Step-by-step explanation:

Beneficial Mutations in Organisms

Mutations are changes in the DNA of an organism and play a critical role in evolution and genetic diversity. While most mutations are neutral or potentially harmful, there is a subset known as beneficial mutations. These mutations can lead to new versions of proteins that enable organisms to better adapt to their environment. For example, a beneficial mutation can be observed when it increases an organism's chances of surviving or reproducing, consequently becoming more common within a population over time. A notable beneficial mutation in humans is the CCR5-Δ32 deletion that confers resistance to HIV. Such adaptive traits underscore the importance of beneficial mutations in the context of natural selection and evolutionary processes.

Another way beneficial mutations manifest is through changes in physical traits that improve an organism's fitness. For instance, if a plant mutation leads to a less palatable taste, herbivores may avoid it, reducing predation and allowing the plant to thrive. Over generations, these beneficial traits can proliferate, illustrating how mutations contribute to the evolutionary success of a species.