The best explanation for how new variations in genetic traits arise in a population is through random mutations that cause changes in DNA with each generation. Here's a step-by-step explanation:

1. DNA Replication: The process begins when DNA replicates itself during cell division. This is how organisms grow and reproduce.

2. Random Mutations: Sometimes, errors occur during the replication process. These errors, or mutations, can lead to changes in the genetic code.

3. Inheritance: If these mutations occur in the germ cells (the cells involved in reproduction), they can be passed on to the next generation. This is how new genetic traits can appear in a population.

4. Natural Selection: Over time, if these new traits prove beneficial for survival and reproduction, they become more common in the population through a process called natural selection.

The other options mentioned are not the primary ways new genetic variations arise. Offspring do not typically look radically different from their parents, and while individuals do acquire new traits during their lifetimes (like muscle growth from exercise), these are not genetic changes and so are not passed on to offspring. Lastly, while it's true that individuals with harmful genetic traits may die before they can reproduce, this is a result of natural selection acting on existing genetic variation, rather than a source of new genetic variation.

Question

The best explanation for how new variations in genetic traits arise in a population is through random mutations that cause changes in DNA with each generation. Here's a step-by-step explanation:

1. DNA Replication: The process begins when DNA replicates itself during cell division. This is how organisms grow and reproduce.

2. Random Mutations: Sometimes, errors occur during the replication process. These errors, or mutations, can lead to changes in the genetic code.

3. Inheritance: If these mutations occur in the germ cells (the cells involved in reproduction), they can be passed on to the next generation. This is how new genetic traits can appear in a population.

4. Natural Selection: Over time, if these new traits prove beneficial for survival and reproduction, they become more common in the population through a process called natural selection.

The other options mentioned are not the primary ways new genetic variations arise. Offspring do not typically look radically different from their parents, and while individuals do acquire new traits during their lifetimes (like muscle growth from exercise), these are not genetic changes and so are not passed on to offspring. Lastly, while it's true that individuals with harmful genetic traits may die before they can reproduce, this is a result of natural selection acting on existing genetic variation, rather than a source of new genetic variation.

Knowee AI · Accepted Answer

The best explanation for how new variations in genetic traits arise in a population is through random mutations that cause changes in DNA with each generation. Here's a step-by-step explanation:

1. DNA Replication: The process begins when DNA replicates itself during cell division. This is how organisms grow and reproduce.

2. Random Mutations: Sometimes, errors occur during the replication process. These errors, or mutations, can lead to changes in the genetic code.

3. Inheritance: If these mutations occur in the germ cells (the cells involved in reproduction), they can be passed on to the next generation. This is how new genetic traits can appear in a population.

4. Natural Selection: Over time, if these new traits prove beneficial for survival and reproduction, they become more common in the population through a process called natural selection.

The other options mentioned are not the primary ways new genetic variations arise. Offspring do not typically look radically different from their parents, and while individuals do acquire new traits during their lifetimes (like muscle growth from exercise), these are not genetic changes and so are not passed on to offspring. Lastly, while it's true that individuals with harmful genetic traits may die before they can reproduce, this is a result of natural selection acting on existing genetic variation, rather than a source of new genetic variation.

Question

Solution

Similar Questions

Upgrade your grade with Knowee