Consultation and testing by trained experts that enable individuals to learn about their genetic heritage, including harmful conditions they might pass along to any children they may conceive, is referred to as .

Genetic counseling

Explanation:

If an individual suspected an inherited disorder(usually dangerous) in the parents, or partner's family  and wish to find out or investigate the pattern of inheritance, or the likelihood of manifesting this conditions later in life, or the chances of the partner passing this down to their offspring, then the expert to visit is  a genetic Counsellor, while the term to describe the genetic  enquires is called genetic counseling. The Counsellor also provides the necessary emotional support that the investigator may need after the discovery.

Besides the above reason, Genetic counseling is also important for

1.How and when to plan a baby ,if the birth is suspetabe to a disorder

2.the type of genetic screening test to go for,

3. how to protect the child and the mother during pregnancy,incase a disorder is already present,

4. to understand family history and to secure the future of the marriage.

5. the necessary safety and curative measures to give the child after birth.

Genetic Counsellors are certified expert with additional master degree in Genetic counseling.

the correct answer is:

a population changes in response to a change in the environment.