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Questions and Answers
What is a genome?
A genome is all of the hereditary information that an organism has encoded in its DNA (or for some viruses RNA).
What is a chromosome?
A chromosome is a threadlike structure of DNA and protein (chromatin) found in the nucleus of most living cells. Each chromosome has many genes, which carry genetic information.
How many pairs of chromosomes do human cells have?
Human cells have 23 pairs of chromosomes.
What is the difference between incomplete penetrance and variable expressivity?
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How does incomplete penetrance affect the expression of a phenotype?
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What is incomplete dominance?
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What is the clinical phenotype of most dominant genetic traits in heterozygotes?
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Define the term 'allele'.
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What is the difference between homozygous and heterozygous?
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Explain the terms 'phenotype' and 'genotype'.
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What are Mendelian characters and how do they inherit?
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