Question

Genetic diagnosis by DNA testing

• A. Detects only mutant and normal alleles.
• B. Can be done only on eggs or sperms.
• C. Involves hybridization to ribosomal RNA.
• D. Utilizes restriction enzymes and a polymorphic site.

Answer 1

The correct option is B Can be done only on eggs or sperms.

• Genetic testing, also known as DNA testing, allows the genetic diagnosis of vulnerabilities to inherited diseases and can also be used to determine a child's parentage (genetic mother and father). Genetic testing identifies changes in chromosomes, genes, or proteins.
• Preimplantation genetic diagnosis is a genetic testing procedures that are performed on human embryos prior to the implantation as part of an in vitro fertilization procedure. Pre-implantation testing is used when individuals try to conceive a child through in vitro fertilization.
• Eggs from the woman and sperm from the man are removed and fertilized outside the body to create multiple embryos. The embryos are individually screened for abnormalities and the ones without abnormalities are implanted in the uterus.