Background: Some mutations have a positive effect on the organism in which they occur. They are called beneficial mutations . They lead to new versions of proteins that help organisms adapt to changes in their environment. Beneficial mutations are essential for evolution to occur. They increase an organism’s changes of surviving or reproducing, so they are likely to become more common over time. There are several well-known examples of beneficial mutations. Here are just two:

Situation: Milk is good for us we all know that. While babies can digest milk there was a time when adults could not. But in areas where humans domesticated cattle and other animals that they could obtain milk from milk became an important part of their diet. This happened because a small population of people developed the ability to digest lactose and  they passed it onto their children and now most people can digest milk even as adults.

Question: What mutation accord?

Situation: Milk is good for us we all know that. While babies can digest milk there was a time when adults could not. But in areas where humans domesticated cattle and other animals that they could obtain milk from milk became an important part of their diet. This happened because a small population of people developed the ability to digest lactose and  they passed it onto their children and now most people can digest milk even as adults.

Question: was the mutation beneficial or harmful?

Situation: Milk is good for us we all know that. While babies can digest milk there was a time when adults could not. But in areas where humans domesticated cattle and other animals that they could obtain milk from milk became an important part of their diet. This happened because a small population of people developed the ability to digest lactose and  they passed it onto their children and now most people can digest milk even as adults.

Question: Where people more or less likely to thrive if they could not digest lactose?

Situation: Milk is good for us we all know that. While babies can digest milk there was a time when adults could not. But in areas where humans domesticated cattle and other animals that they could obtain milk from milk became an important part of their diet. This happened because a small population of people developed the ability to digest lactose and  they passed it onto their children and now most people can digest milk even as adults.

Question: Were people more or less likely to thrive if they could digest lactose?

Situation: Milk is good for us we all know that. While babies can digest milk there was a time when adults could not. But in areas where humans domesticated cattle and other animals that they could obtain milk from milk became an important part of their diet. This happened because a small population of people developed the ability to digest lactose and  they passed it onto their children and now most people can digest milk even as adults.

Question: Were people more or less likely to reproduce if they could digest lactose?

Situation: Milk is good for us we all know that. While babies can digest milk there was a time when adults could not. But in areas where humans domesticated cattle and other animals that they could obtain milk from milk became an important part of their diet. This happened because a small population of people developed the ability to digest lactose and  they passed it onto their children and now most people can digest milk even as adults.

Question: Where people more or less likely to reproduce if they could not digest lactose?

Situation: Milk is good for us we all know that. While babies can digest milk there was a time when adults could not. But in areas where humans domesticated cattle and other animals that they could obtain milk from milk became an important part of their diet. This happened because a small population of people developed the ability to digest lactose and  they passed it onto their children and now most people can digest milk even as adults.

Question: Has Lactose tolerance become more or less common?

Situation: Milk is good for us we all know that. While babies can digest milk there was a time when adults could not. But in areas where humans domesticated cattle and other animals that they could obtain milk from milk became an important part of their diet. This happened because a small population of people developed the ability to digest lactose and  they passed it onto their children and now most people can digest milk even as adults.

Question: Has Lactose intolerance become more or less common?

Situation: Milk is good for us we all know that. While babies can digest milk there was a time when adults could not. But in areas where humans domesticated cattle and other animals that they could obtain milk from milk became an important part of their diet. This happened because a small population of people developed the ability to digest lactose and  they passed it onto their children and now most people can digest milk even as adults.

Question: What developed as a result of domesticating cattle and goats?

Situation: Milk is good for us we all know that. While babies can digest milk there was a time when adults could not. But in areas where humans domesticated cattle and other animals that they could obtain milk from milk became an important part of their diet. This happened because a small population of people developed the ability to digest lactose and  they passed it onto their children and now most people can digest milk even as adults.

Question: Who evolved the cattle or humans?