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Table of Contents
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What is a chromosome?
How many chromosomes do people have?
What is DNA?
How many chromosomes do people have?
Can changes in chromosomes affect health and development?
What is mitochondrial DNA?
Can changes in mitochondrial DNA affect health and development?
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1. Basic Concepts Review
What is a gene? What are alleles? What are phenotype and genotype? What are heterozygosity and homozygosity? Answers here.
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2. Mendel's Laws Review
Gregor Mendel described laws of inheritance many years before the discovery of the DNA. Know the laws and the genius behind them.
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3. Non-mendelian Inheritance Review
Epistasis, codominance, incomplete dominance, lethal genes, pleiotropy, multiple alleles, polygenic inheritance are all non-mendelian inheritances.
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4. Linkage and Crossing Over Review
What is linkage? Why is crossing over so important for the biological diversity on Earth? Know the answers here.
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5. Sex Chromosomes and Sex-linked Inheritance Review
The X chromosome and the Y chromosome are the sex chromosomes of the XY system. Learn here about sex-linked diseases too.
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6. Blood Types Review
What is your blood type? A, B, AB, O? Are you Rh+ or Rh-? Study the blood types, including the ABO, Rh and MN systems here.
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7. Review of Karyotype and Hereditary Diseases
44+XX or 44+XY. What is your karyotype? Study karyotype and hereditary diseases with these review made of questions and answers.
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8. Review of the Hardy-Weinberg Principle
It is easy to understand the Hardy-Weinberg principle. Learn also gene expressivity, gene penetrance and genetic drift.
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9. Genetic Engineering Review
Easy explanation of recombinant DNA technology, cloning, polymerase chain reaction, DNA fingerprint and more.
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http://learn.genetics.utah.edu/
http://ghr.nlm.nih.gov/chromosomes
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