PSYC 2070 – Biological Beginnings Exam | 30+ Q&A | Genetics, Inheritance, Prenatal Development, Disorders | Louisiana State University

This expert-verified study guide includes over 30 multiple-choice questions and answers from the PSYC 2070 – Biological Beginnings unit at Louisiana State University, intended for the 2025/2026 academic year. The content covers foundational topics in biological psychology and human development, including meiosis and fertilization, gene-environment interactions, chromosomal sex determination (XX/XY), and the influence of heredity on traits. Students will also review key genetic conditions such as Tay-Sachs disease, sickle-cell anemia, PKU, progeria, and Fragile X syndrome. Advanced concepts such as genotype vs. phenotype, epigenetic theory, and different types of genotype-environment correlations (e.g., passive, active) are clearly tested. The guide further includes assisted reproductive technologies like GIFT and ZIFT, as well as real-world applications of heredity studies using twin comparisons. It is especially beneficial for students in Psychology, Biology, Pre-Med, Nursing, Genetics, and Human Development programs. Keywords: biological psychology, genetics, meiosis, fertilization, zygote, genotype, phenotype, epigenetics, sex chromosomes, SRY gene, Fragile X syndrome, sickle-cell anemia, Tay-Sachs disease, PKU, progeria, twin studies, gene-environment interaction, GIFT, ZIFT, prenatal testing, chorionic villus sampling