Pre-implantation genetic diagnosis (PGD) is a technique used to screen embryos for inherited genetic disorders, such as Huntington's disease, prior to implantation in the uterus. Which of the following describes an ethical objection to the use of this technology?
The extraction of a blastomere from an early-stage embryo requires highly specialized micromanipulation equipment and extensive laboratory training.
Genetic screening of embryos may produce false results due to chromosomal mosaicism, where different cells in the same embryo have different genetic profiles.
Deciding which embryos are permitted to develop based on their genetic makeup devalues the lives of existing people living with those inherited conditions.
The overall success rate of in vitro fertilization (IVF) coupled with embryo biopsy is relatively low, often requiring multiple cycles to achieve a viable pregnancy.
97 exam-style questions on OCR GCSE Biology 5.1 Inheritance, covering 5.1.1 The genome, 5.1.2 Environment and phenotype, 5.1.3 Variants and mutations, 5.1.4 How genetic variants influence phenotype, 5.1.5 Asexual and sexual reproduction, 5.1.6 Haploid and diploid, 5.1.7 Meiotic cell division, 5.1.8 Single gene inheritance, 5.1.9 Predicting single gene crosses, 5.1.10 Sex determination, 5.1.11 Multiple gene inheritance, and 5.1.12 Development of our understanding of genetics. Each one has a worked solution and a mark scheme showing where the marks go.