Question by genevieve grace: Why are IVF and PGD used?
it’s for a biology assignment and I’m too lazy too collaborate the information myself 
sorry
Best answer:
Answer by cool grl
Preimplantation Genetic Diagnosis (PGD) was developed in the late 1980s as an alternative to prenatal diagnosis and possible termination of pregnancy of an affected fetus for couples who are at risk of passing on serious genetic diseases to their children.
Preimplantation Genetic Diagnosis technique requires the use of the test tube baby technique (IVF) to test embryos for genetic disorders before it implants in the womb (uterus). It avoids the need for abortion. The procedure is associated with ethical and medical concerns and raises issues of sex selection and genetic engineering.
Despite an increasing number of genetic disorders that can now be diagnosed by this technique, not all-genetic disorders can be diagnosed in this way.
It should be noted that genetic disorders could be due to either a single gene disorder or sex linked chromosomal abnormalities. In single gene disorders, such as cystic fibrosis, the actual genes of the sampled embryo can be examined for the presence of the condition. Other genetic disorders, such as Duchenne’s muscular dystrophy, or hemophilia, affect only males (sex linked diseases). In these cases, the cell is examined to determine the sex of the embryo and only female embryos are replaced.
In cases of recurrent chromosomal abnormalities such as Down’s syndrome and recurrent miscarriages caused by parental translocations, the number and character of several chromosomes can be determined.
To whom PGD is advised?
Couples with repeated pregnancy loss due to genetic disorders.
Couple who have a child with a genetic disease and are at high risk of having another.
Couples who wish to identify a tissue match for a sick sibling who can be cured with transplanted cells
Know better? Leave your own answer in the comments!