Related Experiment Video
Updated: Jan 22, 2026

In Vivo Forward Genetic Screen to Identify Novel Neuroprotective Genes in Drosophila melanogaster
Published on: July 11, 2019
Preconception and antenatal carrier screening for genetic conditions: The critical role of general practitioners
Martin B Delatycki1, Nigel G Laing2, Sarah J Moore3
1MBBS, FRACP, PhD, Medical Director, Victorian Clinical Genetics Services, Parkville, Vic; Director, Bruce Lefroy Centre, Murdoch Children@s Research Institute, Parkville, Vic; Honorary Professor, University of Melbourne, Parkville, Vic; Honorary Professor, Monash University, Clayton, Vic.
Background:
General practitioners (GPs) provide advice to women and couples before and during pregnancy to optimise the health and wellbeing of couples and their child. Genetic carrier screening can identify the chance of couples having children with recessively inherited genetic conditions. The 2018 federal budget announced Mackenzie's Mission, a $20 million Medical Research Future Fund project investigating how such screening could be offered to all couples who wish to access it.
Objective:
The aim of this paper is to discuss historical and current screening methodologies, options for individuals and couples identified as having a high chance of having a child with a genetic condition, screening guidelines, Mackenzie's Mission and the implications of carrier screening in general practice.
Discussion:
GPs are crucial to any population-wide genetic carrier screening program and are often the first health professional that women and couples see for preconception and early pregnancy care. Knowledge of genetic screening will be increasingly important as such programs are developed.
Related Concept Videos
Genetic Screens
Forward genetic screens
Forward or “classical” genetic screens involve creating random mutations in an organism’s DNA using radiation, mutagens, or insertion of additional bases, which...
Electron Carriers
Over the many stages of cellular respiration, glucose breaks down into carbon dioxide and water. Electron carriers pick up electrons lost by glucose in these reactions, temporarily storing and releasing them into the electron...
Role of Shaping in Operant Conditioning
The steps involved in shaping begin with reinforcing any response that resembles the desired behavior. For example, parents might praise a child for picking up one toy. As...
Carrier Transport
Drift Current:
The drift of charge carriers is started by an external electric field (E). Charged particles, such as electrons and holes, experience an acceleration between collisions with lattice atoms. For electrons, this results in a drift velocity (vd) given by:
Genetics of Speciation
Critical Region, Critical Values and Significance Level
In hypothesis testing, a sample statistic is converted to a test statistic using z, t, or chi-square distribution. A critical region is an area under the curve in probability distributions demarcated by the critical value. When the test statistic falls in this region, it suggests that the null hypothesis must be rejected. As this region contains all those values of the...

