About This Chapter
Mendelian Concepts - Chapter Summary
While watching this chapter's video lessons, you will be presented an overview of genetic concepts. Topics covered during the 'Mendelian Concepts' chapter include:
- Allele properties
- Human genetics research methods
- Mendel's First and Second Law
- Independent assortment
- Inheritance patterns
- Wild type and the gene pool
This content is provided through brief, easy-to-understand video lessons. Following our video lessons, you can take our supplementary quizzes that provide you immediate feedback upon completion. Your quiz results can be used to determine your strengths and weaknesses, as well as help you decide if you feel comfortable enough to answer questions regarding Mendelian concepts on the MCAT's biological sciences section.
Mendelian Concepts Objectives
The MCAT's Mendelian concepts test objectives indicate that you need to know the following:
- Complete dominance, incomplete dominance and codominance
- Heterozygosity and homozygosity
- Genotype and phenotype
- Penetrance, leakage and expressivity
The MCAT's biological sciences section contains 52 multiple-choice questions that must be completed within a 70-minute time limit. These questions are divided between seven passage-based question sets and 13 individual questions. You can expect that four to seven questions will be assigned to each reading passage. Along with completing he biological sciences section and an optional trial section, you need to answer questions on physical sciences and verbal reasoning sections.
1. Genetics: Heredity, Traits & Chromosomes
We view manipulation of genes in our crops and livestock as a recent development. Yet, man has been manipulating the genetic makeup of his food for thousands of years through cultivation and breeding. This lesson will begin to help you understand how genetics works.
2. Properties of Alleles
What is a dominant phenotype and how will it affect Adrian's flying hamster research? Tune in as he studies homozygous and heterozygous genotypes and the phenotypes they produce.
3. Mendel's First Law: The Law of Segregation
Breaking up is a hard thing to do, but homologous chromosomes always go their separate way. What effect does chromosome segregation have on genetics? We look once more to Adrian's flying hamsters for answers.
4. Application of Mendel's First Law
Hollywood Squares? No, it's Punnett Squares! Those wacky diagrams are a geneticist's best friend. See how they turn geneticists into soothsayers, predicting the genotypic and phenotypic future.
5. Mendel's Second Law: The Law of Independent Assortment
Understanding how Mendel's law of independent assortment describes inheritance of genes is as easy as flipping a coin. Grab a few coins, cue up the video and see how.
6. Mendel's Dihybrid Cross Example: Practice & Ratio
Oh no! Twice the genes and sixteen genotypes - a dihybrid cross seems overwhelming to understand. Never fear though, Punnett squares will save the day!
7. Exceptions to Simple Dominance: Codominance and Incomplete Dominance
Have you ever wondered what it means if someone is a universal donor or acceptor of blood? See how genetic interactions play a key role in this trait.
8. Exceptions to Independent Assortment: Sex-Linked and Sex-Limited Traits
More men are color blind compared women. But often, not every brother, cousin or uncle in a family tree is color blind. Why not? How can genetics explain this seemingly complex inheritance pattern?
9. Pedigree Analysis in Human Genetics: Inheritance Patterns
So you've learned what a pedigree is and how to read or even create one. Now you're ready to learn how to analyze a pedigree and figure out what kind of inheritance pattern a genetic condition follows!
10. Pedigree Analysis in Human Genetics: Tutorial
One of the oldest genetic techniques is pedigree analysis, and yet it is still used every day all around the world by doctors, geneticists, and genetic counselors. Building and reading a pedigree is actually fairly easy if you know what the symbols mean. In fact, it's so easy that you can learn how to do it in less than ten minutes if you watch this video!
11. Human Genetics Research Methods: Pedigrees and Population Genetics
Have you ever wondered how people study human genetics? Do you know what a pedigree or a complex disease is? In this lesson you'll learn about some of the techniques that human geneticists use and what pedigrees and complex diseases have to do with human genetics.
12. Dominant vs. Recessive Alleles
Watch this video lesson to learn about Mendelian inheritance. It explains why we have the eye color that we have as well as the reason that some people have certain disorders and others don't.
13. Genetic Implications of the Gene Pool
This lesson explores the relationship between the gene pool, genetic diversity, as well as factors such as population size and inbreeding and their effect on the gene pool.
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Other chapters within the MCAT Test: Practice and Study Guide course
- Introduction to Organic Chemistry
- Enzymes and Metabolism
- The Transcription and Translation Process
- The Molecular & Chromosomal Basis of Inheritance
- Genetic Variation, Control & Reproduction
- Developmental Mechanisms
- Genetic Variability & Mutation
- Analytic Methods in Genetics
- Evolution & Natural Selection
- Development of Vertebrates
- Thermochemistry & Thermodynamics
- Glycolysis, Gluconeogenesis & Metabolic Regulation
- Kinetics and Equilibrium
- Cell Structure, Functions & Processes
- Virus Structure & Life Cycle
- Prokaryotic Cells
- Cell Biology & Cell Cycle
- Nerve, Muscle & Specialized Cell Types
- Endocrine System: Hormones & Mechanisms of Hormone Action
- Nervous System: Structure, Function & Sensory Reception
- Circulatory System Overview
- Lymphatic System
- Immune System: Innate and Adaptive Systems
- Digestive System Functions & Organs
- Urinary Systems & Structures
- Muscle and Skeletal Systems
- Respiratory System
- Skin System
- Human Reproductive Systems
- Reproductive Sequence
- Translational Motion
- Force, Motion & Gravitation
- Equilibrium and Momentum
- Work and Energy
- Principles of Fluids
- Gas Laws
- Electrostatics & Magnetism
- Electronic Circuit Elements
- Light & Geometrical Optics
- Atomic Structure and Components
- Atomic Nucleus
- Electronic Structure
- Trends of the Periodic Table
- Stoichiometric Calculations
- Acids and Bases Overview
- Solution Chemistry
- Molecular Bonding
- Phase Equilibria
- Basic Molecular Biology Laboratory Techniques
- Sensory Processes & Theories
- Human Senses
- Human Attention & Cognition
- States of Human Consciousness
- Characterizing Language Development
- Genetics, Evolution & Environmental Influences on Behavior
- Prenatal Development & Birth
- Principles of Motor Development, Learning & Control
- Development in the Adolescence Years
- Personality Components & Assessment
- Psychological Health & Disorders
- Motivation Types and Sources
- Attitude Types and Theories
- Types of Social Groups & Organizations
- Theories of Deviance & Social Control
- Learning and Conditioning
- Understanding the Self
- Prejudice & Discrimination
- Social Behavior
- Social Structure
- Families, Religions & Schools as Social Institutions
- Political & Economic Systems
- Health and Medicine
- Culture, Socialization & Social Interaction
- Population and Migration
- Sex and Gender Roles
- Social Status
- Principles & Procedures in Scientific Research
- Scientific Basics & Theories
- Scientific Experiments & Data Analysis
- MCAT Test Flashcards