Genetics & Inheritance MCAT Practice Questions
9 board-style MCAT questions in Biological & Biochemical Foundations (B/B). Each question shows the correct answer; create a free account for the full explanation and adaptive practice.
- MCAT · medium1. A 28-year-old woman and her 30-year-old husband, both of whom are asymptomatic, have a family history of cystic fibrosis. Genetic testing confirms both are heterozygous carriers…
- MCAT · medium2. A student studies the lac operon in E. coli and learns about a mutation that prevents the repressor protein from binding to the operator region. The student predicts that in the…
- MCAT · medium3. A researcher examines a pedigree showing mitochondrial inheritance of a rare metabolic disorder. An affected mother has children with an unaffected father. The mother's mitochon…
- MCAT · medium4. A 4-year-old boy is brought to the genetics clinic for evaluation of developmental delay and hypotonia. Chromosomal microarray is normal. Molecular testing reveals a point mutat…
- MCAT · medium5. A molecular geneticist discovers that a particular human disease follows X-linked dominant inheritance. An affected heterozygous female (X^A X^a) has children with an unaffected…
- MCAT · medium6. A researcher studies incomplete dominance in snapdragons, where red flowers (RR) crossed with white flowers (WW) produce pink flowers (RW). A plant breeder crosses two pink snap…
- MCAT · medium7. A geneticist analyzes a pedigree showing an autosomal dominant trait affecting multiple family members across generations. An affected heterozygous individual (Aa) has children…
- MCAT · medium8. A 28-year-old woman with a family history of hemophilia A presents to genetic counseling before planning pregnancy. Her father was diagnosed with hemophilia A at age 5 years. Sh…
- MCAT · medium9. A 28-year-old woman presents for genetic counseling after her brother was recently diagnosed with cystic fibrosis (CF). She is planning to conceive with her husband, who has no…